Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Dash Light Connection

Old Jul 1, 2017 | 10:08 PM
  #1  
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Dash Light Connection

does anyone know of an easy location to tap the dash lights? I am adding a boost gauge and want to tie in and dim it with the dash lights...
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Old Jul 1, 2017 | 10:32 PM
  #2  
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Re: Dash Light Connection

The radio harness would probably be the easiest point.

http://www.iroczone.com/images/wiring/1992wiringb.gif

I believe it is the grey wire you want, I think the brown wire only controls the clock dimming.
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Old Jul 2, 2017 | 07:14 AM
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Re: Dash Light Connection

The fuse block is easier still. There are extra terminals in the fuse block for gauge lighting, constant 12v+, and switched 12v+. If you want to get really fancy, you can buy the Delco connectors that plug right in, but most people just use a male spade terminal.
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Old Jul 2, 2017 | 07:55 AM
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From: Topsfield, Ma USA
Car: 1989 TTA
Engine: 3.8 Turbo
Transmission: 200R4
Axle/Gears: 3.27
Re: Dash Light Connection

Originally Posted by Drew
The fuse block is easier still. There are extra terminals in the fuse block for gauge lighting, constant 12v+, and switched 12v+. If you want to get really fancy, you can buy the Delco connectors that plug right in, but most people just use a male spade terminal.
That's awesome!! I am coming right down there with a harness but wouldn't that be a full 12 volt source not dim with the dash lights?
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Old Jul 2, 2017 | 09:45 AM
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Re: Dash Light Connection

Drew is correct, look for an opening that is labeled either LPS or INST LPS. That is the dimming circuit.

RBob.
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Old Jul 2, 2017 | 10:39 AM
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From: Topsfield, Ma USA
Car: 1989 TTA
Engine: 3.8 Turbo
Transmission: 200R4
Axle/Gears: 3.27
Re: Dash Light Connection

thanks guys, worked awesome!!
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