does any one know why there is an empty fuse slot under the hood for a tach i have a 97 Z24
 
try the fuse box right inside the drivers side door, cruise control maybe, or any accessory your car does not have
 
 
why would that fuse slot be empty though if i have a stock tach on the dash
 
probably cause it's wired in with the cluster. That may be if you want a fuse for an aftermarket tach?
 
 
That's the spot for connecting a timing light