I pulled the Dash wires and spilled brake fluid on the homemade diagram.

I was able to figure out everything I destroyed except for the tach wires

on the back I have:

12V, 1, and -, markings

The Neg I assumed brown, I have a black/purple wire

Any help is appreciated.


It is a 75 1.8L

thanks in advance

12V = red/white
1 = black/purple
- = brown

Andy

Red/white is keyed hot
Brown is Ground
Black/Purple is tach signal

Bravo Mr. Mohawk
BJH