I Need Help With Tach Installation

[T_5.0_N'works]

#1- I got everything but what I want is to be able to dim the back light of the tach with the dimmer switch in the car. I pulled it but it has about 8 different wires behind it, I'am assuming for all the things it dims. I would like to know WHAT COLOR wire I need to splice into to have the function of dimming my tach's back light.

2- Where is the ignition wire and what color is it to tap for the tach also.

92' Coupe

Thanks, Jonas

 

[Rick 91GT]

The Blue wire with the red tracer is the lighting wire, tap into that and it will dim

You can pull a 12v wire from the fuse box or there are a few on the steering column, do you have a Chilton or Haynes with the wire diagrams?

 

[T_5.0_N'works]

The Blue wire with the red tracer is the lighting wire, tap into that and it will dim

You can pull a 12v wire from the fuse box or there are a few on the steering column, do you have a Chilton or Haynes with the wire diagrams?

Sweet thanks, yeah I have a Haynes. Any specific ignition wire would be better?

 

[T_5.0_N'works]

TTT

Anyone know which ignition wire?

 

[Rick 91GT]

I believe it is a big red wire like 12 guage that comes down the steering column.....all my wiring is currently out or I would check...

 

[jerryD]

any wire that comes on when you turn the key on. Mine is hooked in to the same one that powers the radio.

 

[redterror302]

Where is your tach installed? To the right of the instrument cluster? You could just run all the wires to the radio if you wanted. For my guages, I got power from the light behind the AC control panel. It can dim like you want. Then I got power from my radio. It's not hard at all. I am not sure how easily you can run the wiring to the radio from the instrument cluster, since my guages are in the vents. It shouldn't be bad though.

 

[jerryD]

her is a pic of my setup. I have an 86, so it is different than the 87-93 dash. For the dimmer, i think i hooked in the radio harness as well. I just started to probe wires till I found one that would come on with the headlight switch and dim at the same time.

 

[T_5.0_N'works]

Thanks guys I got it done.

What I was confused about was the ignition wire, I thought it was a special wire that was near the ignition but in reality it was any wire that got power when the key was turned, I = . I just did the ignition wire to a wire under the column that got power when key was turned. I did the dimmer switch by pulling out the dim panle switch and using the blue wire with red tracer(which someone told me to use) and it works like a charm. Didn't have to take apart the center console which is what I didn't want to do. Now that I look at it, it's really quite simple.

Jonas