How to hook up a tach. [Archive] - Chevelle Tech

: How to hook up a tach.


rianbechtold
Aug 30th, 04, 10:57 PM
I just got a new tach and it has 4 wires-white, black, green, and red. I'm traced the green wire to the coil and am wondering where the others go. (It is installed on another car and i am transerfering it but i didn't install it the first time!) Thanks!

sxty9shovel
Aug 30th, 04, 11:22 PM
white wire is to 12v dash lighting
red wire to 12v ignition switch
black is to ground hmmmm never would thought it lol
green is to coil......

thatll get it goin.......

dirty_dawg
Aug 31st, 04, 2:21 AM
Yup, and you can use the accessory ports on your fuse block to run it too....saves you from hacking into your dash's wiring.

rianbechtold
Aug 31st, 04, 8:25 PM
Sorry, so which wire would go to the accessory port? Also, why does a wire need to go to the dash lighting?

sxty9shovel
Aug 31st, 04, 8:59 PM
white wire goes to the acc......


so that when u turn on ur lights and ur dash light comes on well then ur tach light comes on...... graemlins/thumbsup.gif graemlins/beers.gif