How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

I have an 18 Circuit Painless Wiring Kit. It has one wire (that I can find) for the tach. The back of the factory tach appears to have three different connections. Can anyone clue me in as to how I wire my tach up with the 18 circuit painless wiring harness? I appreciate any help anyone can offer. Thanks!

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

ttt

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

Bump appreciated. And here is a pic of the back of my tach. I don't have the factory harness. Trying to determine if I need one since I'm not hooking up to a stock coil anyway. Its going to an HEI distributor. I assume I need a power, a ground, and the sender (or whatever it's called), but I don't know which is which and what the power requirements are.

http://i219.photobucket.com/albums/c...s/100_3304.jpg

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

I moved this over to the electrical forum for some help here....hopefully they'll chime in for ya:D

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

Here's an image of a labeled factory tach, the coil wire goes to the tach port on the HEI cap, the 12v port goes to an ignition source and the housing provides the ground through the dash.
http://www.67-72chevytrucks.com/vboa...1&d=1055649102

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

Awesome! Thanks for the help.

Re: How Do I Connect Painless Wiring Kit To Factory Repro Tach
 

Yeah, the GM tachs are stamped, the top post is a ground. ;)