Another battery relocation thread... - Performance Forum

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Another battery relocation thread...
Tuesday, March 28, 2006 11:02 PM
I searched a couple of thread about it and I still have a couple of questions. If I'm lucky once I get out and school and get a stable job, I may get the gm supercharger this season or in 07, but for the moment (since I don't put any more cash in the car until I have enough for the s/c) I want to prepare some stuff that will be already done for the "big day". I know what I'll need such as :

4Ga or 2Ga cable (about 30' (got it from Shifted answer to a post))
2 battery posts connectors
Battery box or battery tray... whatever that will firmly hold it there
2 distributions blocks

My questions/thought is :

- Ground in trunk

- Positive running to the front of the car (probably inside the car, my interior is all ripped off for the moment so it will be easy to run the wires)

- If I want a kill switch in the trunk, just to be safe for the tracks, I just crimp 2 connectors on the wires and plug it on the killswitch?

- Once the + reached the engine bay what do I do exactly, the wire enter in the distribution block and then go to the components?

Hell I don't even know what a distribution block look like.... So I need your help!!!

Pics would be even better. Once I'm all done I'll "try" to make a how-to with pics so electrical newbies like me won't start a new thread

Thanks!!!






Re: Another battery relocation thread...
Wednesday, March 29, 2006 7:04 AM
well I just got mine done about a month ago and I see what I can awnser for ya.


--the general consesus for grounding in trunk is no. theres a install post floting around which said that you needed to ground to the bay for guage reasons

My experince: I tried gorunding in the trunk and it was a no go. I ran a 4 uage to the strut tower bolt. nothing I belive I even ran a second. so I just went and bought a second 4 G and hooked it to factory ground. no problems so far


-- The poistive..... a yeah you need to hok it up somehow right? mabye I read this wrong. what do you mean?

-- yeah that should work for the kill switch. but can I ask why run one??? whats wrong with just turning off the key.

-- this next one really confused me. I know what you meant but it boggles me why your thinking that way. from the way you asked it seems you want to ripp out the factory wiring. and run your own line to the distrib.

why not just use the factory. wiring? I just went to homedepot boought a 4 guage wire connectr striped the factory wiring and hoked it up. no problems what so ever......

well except for that I throw a low volt code everyonce in a while. but I am running a 1600 watt amp with no cap. my dome light is like a rave when the sub hits.

if you need any more help pm'm I have pics to if you want them. but Im to lazy now


"boobs now with Riboflabin"
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Re: Another battery relocation thread...
Thursday, March 30, 2006 9:37 PM



"boobs now with Riboflabin"
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Re: Another battery relocation thread...
Thursday, March 30, 2006 9:41 PM
correct me if I'm wrong, but isn't the kill switch for track (Solo2) purposes?

I've been considering doing this mod too, so thanks for the info. how did you mount the battery in the trunk? I'd like to use a box.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Another battery relocation thread...
Thursday, March 30, 2006 11:44 PM
Jcavi - for some track requirements, he needs a kill switch, also, it one less way a crook will steal your ride.



Re: Another battery relocation thread...
Thursday, March 30, 2006 11:57 PM
how would you mount the kill switch so it can be out for track and in the trunk for dd?

jcavi - did you run the ground all the way from trunk to engine bay?



Re: Another battery relocation thread...
Friday, March 31, 2006 12:43 AM
he NEEDS the switch for track. my roommate just bought a couple for his Blazer. you just hook it up in series on the positive wire. there's a key that goes in it to connect/disconnect it. I imagine you could just mount it up on a strut tower.


Desert Tuners

“When you come across a big kettle of crazy, it’s best not to stir it.”


Re: Another battery relocation thread...
Friday, March 31, 2006 4:52 AM
Jcavi wrote:
well except for that I throw a low volt code everyonce in a while. but I am running a 1600 watt amp with no cap. my dome light is like a rave when the sub hits.



ahh ,nice, rave when the sub hits. nice!

Also, where has everyone been buying the battery box at, and how did you secure it in the trunk? screw into the sheet metal below the carpet?



Re: Another battery relocation thread...
Friday, March 31, 2006 7:42 AM
the switch is required for drag strips also

and it has to be axcessable from the outside of the car , so they can shut the battery off in the event of a accident


some of the high dollar switchs will allow you to keep a constant power to the PCM , so that when shut off you do not loose the stored fuel maping that is learned as you drive the car

also good to keep memory for your radio







Re: Another battery relocation thread...
Friday, March 31, 2006 3:16 PM
If you want a switch, you should use one with an alternator cut out as well. The car will continue to run off the alternator if you throw the switch with it running. Mounting it inside a compartment (either trunk or underhood) negates the entire purpose of the kill switch. It has to be mounted where someone can reach it from outside the car. The cowl, behind the lisence plate, and on the rear bumper are popular places. You can use a 10a circuit breaker across the switch terminals for the Keep Alive and radio memory.

I'm not really sure why anyone would have an issue with the ground in the trunk. Assuming its a good ground (not just a screw to the sheetmetal, but a bolt theaded in somewhere), there shouldn't be any issues with sensors, etc, unless the engine to body ground is bad.




Re: Another battery relocation thread...
Friday, March 31, 2006 4:06 PM
Just MAKE SURE you don't mount the kill switch directly to metal. Doing so will short the battery and ole' sparky will come out and make a mess outta your car. And I agree, there's no reason you should have to run the ground all the way back to the engine bay. The ground needs to be as short as possible. Try running a bolt through the rear subframe and grounding to that.




Re: Another battery relocation thread...
Friday, March 31, 2006 4:36 PM
cahill - if the switch had an alternator cut, would we hafta run the alternatpr wire all the way to the back too?

also, what if the car is a daily driver, i don't think it would be good to have the kill switch out constantly



Re: Another battery relocation thread...
Tuesday, February 12, 2008 10:22 AM
i've been thinking about this too. so you just run a positive to the trunk ( i already have one for my system) and connect it the the factory wires. And just get a good ground in the trunk. that doesnt sound to difficult. what did you guys do for mounting the battery?

horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Re: Another battery relocation thread...
Tuesday, February 12, 2008 10:36 AM
Yeah, im going to be relocating the battery to the trunk as well.
If you need a battery relocation KIT, they sell on ebay for like 50 bucks shipped. Any they come with a battery box and everything.

I would have to say ground the wire to the engine bay, where the existing one is, just because i tried re-routing the ground so i could turn my battery around so i could fit in the intake piping for the HO swap, and grounded it somewhere else where something else was grounded, and my gauge cluster and ABS went crazy. You can always just run a ground wire back. (***But im willing to be persuaded otherwise since no one wants to buy extra wire if they don't need to, so if someone finds a solid ground, let me know because i also want to remove the battery tray and round out the inside of my engine***).

A killswitch could be located in the wheel well right? or does it have to be accessible from the outside of the vehicle in a very visible place? (I don't want people who are smart asses to just walk by my car and pull the kill switch!) Or can i just have a magnet made that says KILLSWITCH and an arrow, and put it near the kill switch?

I know these are a lot of questions, but hopefully some of the answers will clarify anything anyone is wondering.


I'm back from the dead.
Currently Driving: RSX Type-S.
My Cavalier Burnt up :-(
Re: Another battery relocation thread...
Tuesday, February 12, 2008 11:16 AM
I just got to thinking you could always mount the kill switch in the easily accesible spot by the licence plate but not have it hooked up when daily driving. Just premake your wires and conct it when you go to the track before the tech inspection. Then you do not have to worry about someone messing with it.



FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!

Re: Another battery relocation thread...
Tuesday, February 12, 2008 9:17 PM
y do you need a kill switch?

horsepower is the force that determines at what speed you hit the wall, torque is the force that determines how far you take the wall with you after you hit it.
Re: Another battery relocation thread...
Tuesday, February 12, 2008 9:23 PM
Because a lot of tracks require one due to certain speeds and relocation of the battery. The local track im at does. if the battery is relocated, then it must have a kill switch. also it must be tied down at all times or no racing.



Re: Another battery relocation thread...
Wednesday, February 13, 2008 5:54 AM
WE recently relocated a battery on a J. We did not run the ground all the way to the front. Why do that? We grounded to the chassis rail under the car. Drilled a hole in the trunk area to go through. NO problems. We did (not that it was needed) get the factory ground up front. Our power from the battery runs straight to the starter (just as it does stock). We used the stock positive cable to go from the starter to the fuse block under the hood. Everything works great. I sufggest buying the cable off ebay (they have some good deal on 2, 4 gauge wire (20ft of black, 20ft of red) for about $50. We bought a battery hold down kit from the local parts store for a few dollars. Of course there is those nice battery boxs, but they can cost $75+ for the really nice ones. I hate the plastic black ones.



FU Tuning



Re: Another battery relocation thread...
Thursday, February 14, 2008 6:33 PM
This is an article which will and can be used for pretty much any vehicle and not just the SRT-4.
I also plan on doing this to the Cavalier and have most of the parts already for this relocation.

We strived to do this setup so that we (Kevin-owner of the SRT-4 and I) could pass inspection at any NHRA and IHRA sanctioned track. Tech inspection is a tedious affair and with reading everything we could in the NHRA, IHRA, and Sport Compact division articles, came up with a plan to do it right, add a bit of overkill, and have options so that if we need, can add a lifeline to the system if needed.

I'd give you a complete list of everything but the time to do so would entail days of going through receipts and records.
So with pictures and a little bit of text, hope to dispell any controversy with doing this battery relocation correctly.

First, here's a picture of the engine bay of the SRT-4 (or any engine bay) with the battery removed as well as the battery tray.
When doing so, only remove the hot and ground posts from the battery but keep all of the connections on those posts in tact until you start putting in your hot and ground posts. This keeps the confusion down and eases installation.
Here's the pic.


Next, here are some of the pictures of the cables we used, some parts, and if you look closely, can pretty much figure out what you'll need to do this right.


We pretty much took some 16 gauge wire to premeasure all of the lengths that we needed to do this install.
We actually run the wire through all of the places we decided to run the main power cable as if we were actually running the cable itself. Once done, took notes on the lengths that we had and also drew up a schematical diagram of the car on paper with the lengths to where we needed to go.
We also figured out where we were going to mount the hot and ground posts in the engine bay, where we were going to mount the battery box, and how we were going to route the wire on paper, and on the car itself.
Remember, everything we did was premeasured so that when we took our wire to the shop, had them professionally crimped with a hydraulic crimper.


Here, you see some more wires that we premeasured with ends already crimped.
We used 2/0 marine cable which was flexible enough to route and had enough strands to carry a good load with negligible voltage drop, period.
Btw, each and every cablle came out perfect and fit every exact location we measured. If you didn't guess already, we bought one long length of cable and cut the pieces as needed to make up the individual connection. We even marked those cables with marker to let us know ahead of time which cable went where so it'd make the install a bit easier. It helped bigtime.


Here is the car with some cardboard down for ease of getting around on the concrete.
Sliding on cardboard is a tuners best friend.




These are some pictures of the parts we used.
You can get most of these at any marine dealer or online.
BlueSea Systems parts, Lowes or Home Depot will have alot of the other parts you need including the 3/8 inch stainless bolts/ nuts, washers, and every little bit of hardware you see in the pictures.
I used 5/8 inch splitloom to cover the main run of the cable going from the old battery location to the new location in the trunk. It's also one piece so if you can get it cut by the foot, will work out better.
The Flaming River switch you will need is the 1013 model and not the 1011 model we used. You don't want to use the magneto switching circuit so just buy the 1013 model and you'll be fine.
Also buy some 4 gauge power wire for the alternator charging circuit as this will alleviate any loss of voltage for the best possible connection.
Make sure that you use a 200 amp fuse and fuse holder to hold the amount of juice that is needed to crank the car as that can be up to 200 amps when the battery could be low. You can use the ANL or ANS style fuse and can be found at most car stereo shops.
All of the ring terminals we used for most of the wiring were for 2/0 cable and 3/8 hole diameter. We kept it all 3/8 since this was the most popular sizing that we could find.

We also recommend using the aluminum battery box by Jegs because this would nullify the need to have a firewall necessary to make the setup NHRA/ IHRA legal. Groupe 24 is what we used and purchased the Kinetic 1400 battery for our cars. We opted for the Kinetic because of our sponsorship with an audio store that gave us the batteries at 10 bucks above cost. Thank you Advanced Audio.

Here we go with the actual install.

Here, we brought up the wire from under the car, behind the driverside front tire into the engine bay.
This route was the easiest to run and kept it the shortest path while being safe around the turbo and other things that could get in the way of the wire.


Above, you'll see the turbo in the top right, the main power cable, and the 4 gauge charge circuit wire which was already run through the car for the car amp that Kevin had in his car.
If you're like most, you'll already have a good size wire in the car run for your amp which is usually in the trunk. This made it easy for our charge circuit with the wire being big enough, long enough, to meet the needs or our install. One step deleted.


This is from under the car, looking up and just to the left of the center of the car going into the engine bay.


Another view of the wire going into the engine bay from beneath the car, just under the driver seat but to the right of the main chassis frame.


Last picture from below and before we added the loom to the whole run of cable. We also used the steering pump tubing to hold the cable down so it wouldn't go anywhere.


First picture of the cable from under the car, driver side and along the chassis frame of the car. You'll also see our use of the electrical straps that were 3/4 inch in size and worked out perfectly.
We also used some sheetmetal screws which were self starting and 3/4 inches long. We did predrill the holes for the screws as this made the turning of the screws so much easier than trying to start the hole with just the screw. Also remember that we had limited room to get under the car so were limited with how much room we had for drilling.


Here, the picture is upside down. lol
It's actually got the cable on the inside of the chassis with it going through the hole, going to the rocker section of the car. We kept the bends gentle and used this method so that when the car would be lifted by shops or jacks, would'nt get in the way of the jacks. Good thinking Kevin.


Looking to the rear of the car, you'll see the same cable coming from the frame rail hole to the rocker panel.
The clamps worked perfectly and the cable would not move whatsoever. Great idea with the clamps. Some of the clamps we closed in so that they would hold onto the cable a bit better and for the fact that the cable wouldn't move. We did this especially as we got closer to the rear wheel.


Find a location where you want to install your switch. This should be done before and while you're measuring the cables. You may have to remove the bumper to see where all of the support beams are and also so that you don't short out the connections on the back of the switch after it's installed. Leave enough room for the switch connections so that when the bumper is on, nothing touches.


This is where we found to be the best location for the switch. It worked out good but hindsight said we should've mounted it elsewhere so that the width of the body of the switch could be accounted for. It still works great but aesthetically could be better. Once you drill your hole, that's where you'll be mounting your switch so plan it out carefully.


Here you'll see where the wire came from under the car, was routed on the support beam, looped around to one side of the switch, and then with another precut cable, would lead into the car through the air vent on the side of the vehicle.


Here, you see to the lower left, the incoming wire in the split loom as it loops around to the farside of the switch, with the red wire on the other side of the switch leading into the car through the vents.
This is it for the first part of the install, see the second thread for more.


Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!





Re: Another battery relocation thread...
Thursday, February 14, 2008 6:35 PM
age two of the article.


We're finally coming to the good stuff.
With some ABS plastic sheet that we had, we installed both the positive post and negative post with the charge circuit fuse on one plate. We also arranged the posts as if it was the battery in the engine compartment for ease of installation and wiring.


Here is the plate already mounted to the original bracket that housed the battery tray. We used sheet metal screws to hold down the tray and were stainless. We tried to use as much stainless as possible so that the looks of the install would be good for the life of the car.


A closer look at the plate install. You'll notice that we only needed two screws to mount this plate. With all that we did with this installation, never had a problem with just two screws holding down the plate, even when full torqueing the studs with cables attached.


One thing we did have and needed for this install was a professional crimp tool that could do anything from 6 gauge to 6/0 cable. It cost me 80 bucks and was well worth the expense with this install. We're not saying you have to buy one but if you have one available, it'll keep you from having to break from your work to have some cables crimped.


Here you see us having to custom cut a cable and add an end with the crimp tool.


The finished product after the crimp. Make sure that you thoroughly tape the connection to seal it from any moisture and future corrosion issues.


To the right or right post are our negative connections.
The connection going to the right is going to the original ground that the factory used only we drilled out the hole, sanded down to the metal, and used a stainless nut/ bolt to fasten it to the fender.
The ground connection going to the left is going to the tranny utilizing the factory 3/8 hole that just begged us to use it there. You'll see that connection in the picture below. Both of these connections were precut and used 2/0 wire. Even though the picture doesn't show it (due to a late decision), we added a third connection using 2/0 cable (very short cable and again, precut and measured) going to the actual frame. Again, we used a 3/8 nub/ bolt to fasten it down.
The other grounds you see are ground straps going to the fender, and coil pack.

In the center, you'll see the fuse holder with the 4 gauge wire that leads to the trunk already hooked up to the fuse block.
To the left or positive post, you'll see all of our hot or + cabling.
The one heading left is going to the starter and was an original cable that we upgraded awhile back with some 4 gauge going directly to the starter.
The cable leading to the back of the car or straight up, is the main cable that goes to the trunk.
The little cable you see under the main cable is going to the water injection system and fit fine with no modifications needed to make it fit.

Keep in mind too that awhile back, we added a complete ground strap system to the car for better electrical flow. I'd advise anyone that's doing this that you should do the same.


Here you see the ground cable coming from the ground post on the plate on the tranny. The tranny had a 3/8 hole which we used to do this.
Also, there was a ground wire we added using 4 gauge that connected the tranny to the head of the engine. This again was a cable that we installed awhile back for overall better grounding.


Ok, back to the back of the car.
Here, you'll see the cable coming from the batter switch through the vent of the car along with the 4 gauge wire that was originally used to power up his sub. Since this 4 gauge wire was a bit short, we needed to lengthen it abit.
There are no butt connectors big enough and to maintain the best connection, opted for using two 3/8's terminals, crimped onto the ends, and used a nut/ bolt to tie the together and heavily taped. Some call this a monkey ball and would be the best way to do something as heavy as 4 gauge or bigger.


We decided to mount one of the ground wires to just inside of the wheel well so that we could use a nut/ bolt to make the best connection possible for our chassis ground. Drill your hole, scrape the paint as needed to make the connection, and bolt that down good and hard.
Again, this was a precut cable and premeasured cable from the beginning using 2/0.


Our second ground connection that will eventually hook up to the battery in the battery box.
The best place for this turned out to be close to the grounding point of the factory ground for lights, etc. We again used 3/8 inch nut/ bolt to fasten it down.


This is pretty much a complete look of all of the ground connections with the hot wire going to the front of the car in the red boot cover.


With careful measurement of where the cables are going and premeasuring where the batter box is going to be, you can cut the carpet just enough to give it a professional look.
Keep in mind too that you'll need to drill some more holes in the battery box for the couple of extra cables you'll be using.
Remember also, we're doing an overkill setup here using two grounds to the chassis instead of the usual one. I personally didn't want to risk any possibility of having enough ground.


Here is the vent on the side of the rear panel. You'll see the cables strapped together and the black tube you're seeing is the vent tube that'll be used to vent the battery box.
Also, the 4 gauge wire is coming from the alternator charge circuit from the fuse block between the hot and ground posts on the plate. This alternator wire should lead to the incoming main wire from the engine bay and not the outgoing cable leading into the battery box. This cuts power to the charge circuit and power so that when you flip the switch off, everything shuts down.


Here is a closeup view of what I'm describing for the charge circuit and how it's connected to the switch.

On a side note for the charging circuit.
Most charging systems use the charge wire from the alternator and hook it straight up to the starter. The starter in turn has a heavy gauge wire that hooks straight up to the hot side of the battery.
That said, disconnect this alternator charge wire which was originally hooked up to the starter and extend it to the other side of the fuse block between the hot and ground posts on the plate.
You can use a monkey ball to do this (described above) or do like me and use an uninsulated butt connector, crimp it, and then solder/ heatshrink it for the ultimate connection.
Any questions about this, please post up and will try to help as much as possible.
Also have an electrical schematic from a service manual to confirm the charge circuit to the starter.


Here is the finished product.
We used 4, 3/8 inch stainless steel nut/ bolts to secure the battery box to the body of the car. This exceeds NHRA and IHRA which states to use only 2.
We also had to ream out a couple of the holes that came with the battery box while cutting out another to pass the extra ground we ran to the fender.
Also you'll see where we mounted the fuse to the batter box using 3/4 inch self starting sheet metal screws. It worked out perfectly and has ease of access to the fuse if it ever pops.
Make sure to stap down the box and that you do have the vent hose hooked up to pass inspection.


Here is the final installation of the old battery location


The finished product and would never know that we did a relocation.

Any questions, please post up.


Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!





Re: Another battery relocation thread...
Thursday, February 14, 2008 10:46 PM
Another excellent writeup Misnublu.

Re: Another battery relocation thread...
Friday, February 15, 2008 5:52 AM
Here is how I did mine, same idea but through the interior.

Overview:
Red top Optima Battery secured inside a modified battery box/tray and mounted in the trunk. 2 AWG negitive cable bolted to trunk frame underneath the trunk liner. 2 AWG positive cable connects battery through a 100 amp resetable breaker (mounted on battery box/tray), underneath interior floor carpet, and on to a forward battery terminal post bracket. All OEM battery connections remain untouched.







The breaker is mounted on the side of the battery tray above between the trunk wall and battery, so you can't see it in the pic. Advanced Auto has these breakers in the electrical section if you want to see one.

Next I modified a plastic battery handle and mounted plated battery terminal mounts. I only needed one, the second is just in case I need to add something later.





I got all parts from Lowes,Autozone, or Advanced Auto;

Advanced Auto
2 AWG Cable by the foot
100 amp breaker
2 AWG terminal lugs
Plastic Battery Handle
Battery box

Autozone
Plated Battery terminal post

Lowes
Rubber electrical tape
alum flat bar
bolts, nuts, washers






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