Hey folks. I bought a tach (after market) and was wondering which wire is the coil ground wire. My car is an 88 camaro with the 305tbi. Getting the power and stuff isn't a big deal. But I have four wires coming from my coil, and want to use the right one instead of messing up a bunch of stuff.

Please help!!

 

Ground on most USA cars is Neg - which is White wire at the coil / pink is Pos + 12V

Should have that white tacho wire under the dash as one white @ coil neg terminal goes to dist and other white goes inside for tacho
Saves having to run a new wire through the firewall

 

ttt