MY past 2 decks havn't had this wire. My new deck does. I don't see anything that it connects to. What's it for, the instructions don't elaborate on it?

 

its for the dimmer switch that you use for you dash lights. Don't even need it, i never hook it up anyways. Just trim it outta the way and dont worry about it

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91 Firebird .. 305 TBI .. 5 speed
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My wonderful page with pics, stuff, and my own car stereo tutorial..
http://members.aol.com/deadtrend1/index.html

 

If you use a wiring harness and the stock wiring adapter is intact it should hook right up.

It gets tricky without a harness because you have to tap into a circuit that works with your dashboard lights.

You don't need to use it, but a dimming feature is nice on the eyes at night time

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92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Richmond 3:42 gears, Torsen HD Posi
Sights & Sounds:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers. Z28 grille w/aftermarket lights, MacEwen whiteface gauges
NEXT UP: TBI & Suspension mods

 

I agree. Some radios have buttons that are hard to see at night, so when that wire is hooked up, it backlights some of the buttons so you can read them.

Juan

 

Didn't use the wire, all my buttons etc are lit up. Rather brighter than my gauges but I can live.

 

Mine didn't use it. There is a grey wire that just feeds a hot to the stock deck lights to light it up at night,when your parking or head lights are on. There is no "dimming" wire on the older ones (88' and older) "that I am aware of" that is.

 

I've got an '85. There is a grey wire from the car but I didn't wire it to anything. The deck is lit up all the time cause it's an LED bit.