This is topic Tach install on a 89 lx in forum Tech Talk at Northern California Ford Owners  .


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Posted by rayski25 (Member # 11363) on :
 
I have it mounted an hooked up but where do I connect the wire for the back lit light? This is the only problem I ran into. Thanks
 
Posted by klean50stangz (Member # 11083) on :
 
I had that same issue so what I connected it to a direct word then installed a switch to turn it on at night an off in the day
 
Posted by Marks93 (Member # 11130) on :
 
On the back of the dimmer switch, there is a light blue wire. Tap into that one and the back light on the tach will light up with your light switch, and dim when you use the dimmer switch. At least I think it's the light blue one with the white stripe. That's what I did and it works great. Yes, you have to take off the dash piece but it's pretty easy.
 
Posted by Adam5.0 (Member # 6995) on :
 
the easiest would be the illum. wire for the cd player. dont know what wire it is but just poke around in there with a voltmeter while playing with the lights and dimmer switch and look for the change
 
Posted by norcalfiddy (Member # 11207) on :
 
i tapped in to the fuse panel. forgot what one, (ill check tomorrow) and it worked perfect. light turned on and off with the dash lights.
 
Posted by rayski25 (Member # 11363) on :
 
Ight I'll try most of these tomorrow that's guys
 
Posted by 84SVOrick (Member # 9039) on :
 
its either a brown or white wire behind the light switch button
 
Posted by nasty93 (Member # 8935) on :
 
tapped mine into my dimmer switch with a snap on tap connector..
 
Posted by rayski25 (Member # 11363) on :
 
I tried the fuse box no luck
I tried the light switch also with no luck
I tryed the dimmer but couldn't really get to it is their anyway to pull it out?
 
Posted by just_another_ 91 (Member # 9317) on :
 
its the blue and red wire by the stereo
 
Posted by 84SVOrick (Member # 9039) on :
 
You could jus run it to a constant 12v source, but the wire behind the light switch is key
 
Posted by gercolla1 (Member # 3068) on :
 
white wire= to brown wire under headlight switch
black wire= ground it in a clean spot
green wire= to + on coil
red wire= yellow ign wire on ign switch
 




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