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Discussion Starter · #1 ·
Hey guys.. just installed a deck (cd player) in my car, and it works great except that my gauge lighting circuit blew a fuse. I haven't looked into it much yet, but I hooked everything up right as far as I can see.

The deck has a lamp/illumination wire and I hooked that up to what was labelled "lamp" on the stock stereo. One other thing I did was, there was two different grounds on the stock stereo, one for the constant power and one for the ignition power. The new deck only had one ground, so I wired both together. I don't think that would matter since I assume they are both chassis grounds.

What do you guys think? Anyone else had this problem after installing a deck? Maybe you could save me some annoying electrical searching/troubleshooting.

Thanks!

Dave

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84 GN, still hotair. Basic go-fast mods :D alloutracing.com/Rides/GrandNational

Member of the Manitoba Grand National Association: www.mgna.ca
 

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Hmm,2 grounds... that may be your problem.
Don't use the factory deck grounds for your aftermarket deck. I think GM used a floating ground system for their decks. I tried that once, and when you turned on the headlights, the deck would shut off.
Just ground the deck to any other metal peice under the dash.
As far as the lamp/illumination wire, why would your aftermarket deck have one?
As far as I know, your new deck should only have a yellow(12 volt constant)red(Switched 12v)ground, and a blue remote turn on for the amp or power antenna.
Hope that helps a little....

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Best time so far: 12.78 at 107.5mph on radials, 2.05 60 ft
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My Pioneer is wired so that I don't need to even have the key in the car to turn it on.
Wired through a spot in the Fuse Block labeled BAT. You need constant power to it for your stations. Run an inline fuse to protect the head unit if you wire it this way.
As for the fuse being blown out.
Make sure you don't have a bare spot in the power leads for your deck.
Mine has 1 ground that I know of. It is grounded to a screw that connects to the steel part of the dash.
I would assume your grounding both ground wires together is alright.
I prolly didn't help you out any but if I did... Good.
 

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Too much current draw on the lights circuit.

Only the radio lamp wire should get power there.

I think it's wired wrong.
 

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The dimmer option on your deck is unnecessary. Just disconnect it, it will work, but won't dim with your dimmer switch. It sounds like your deck is just drawing too much power. I have a Pioneer CD player in mine too, but my dimmer is not connected, it's unnecessesary to me. HTH
 

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Iheartporn
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you've got it wired wrong. the ground from your radio should go to the black wire from the black plug. (the one with yellow, gray, and maybe pink) the plug with 2 wires (orange and brown) is where the clock lead comes from. hook the orange GM wire to your radio's yellow wire and leave the brown lead hanging. it's the dimming ground circuit for the lights, your pioneer doesen't need it.

if you've already cut off the plugs, DOUBLE CHECK the wires with a meter. there's 2 browns, 2 yellows, and two gray wires. the yellow and gray get hot sometimes and will fry your radio if they touch a speaker output.

earl
 

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Discussion Starter · #7 ·
Thanks guys! It sounds like the second ground (the brown wire from the set of two wires) is causing my problem. And it sounds like I may as well snip the "lamp" wire.

I'll do that as soon as I can, thanks again!

Dave

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84 GN, still hotair. Basic go-fast mods :D alloutracing.com/Rides/GrandNational

Member of the Manitoba Grand National Association: www.mgna.ca
 

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Discussion Starter · #8 ·
Problem solved! Cut the 2nd ground and the lamp wire and it works good. Thanks guys!

Dave

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84 GN, still hotair. Basic go-fast mods :D alloutracing.com/Rides/GrandNational

Member of the Manitoba Grand National Association: www.mgna.ca
 

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Iheartporn
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you can leave the gray wire hooked to your radios lamp lead (orange?) so the lights will work. the gray is 12V+ and the brown wire that was messing you up is a variable ground to dim the stock radios lights. the gray will power your lights with no problems. (or dim them at night, whatever your radio does)

earl
 

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I put my radio from my 87 Century into my 88 Astro van. The Astro had the radio delete, but there was a lead for dimming. I hooked it up to the radios lead, but it works backward. The radio lights get brighter as the lights come on, and when you dim the dash lights it gets brighter yet! I guess it must be a different interface.
 
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