Radio Draining Battery
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From: San Antonio, Texas
Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
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Radio Draining Battery
Hey guys i have an issue, the po had hacked up the wiring for the stock radio and put in a aftermarket system with an amp running straight to the battery i removed the amp and had the stock radio wired back in but noticed that the speakers would stay on even when the car was off then eventually started draining the battery overnight, ran a draw test and the radio is drawing to high a current even when off what should i look for?
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: Radio Draining Battery
Well the speakers must be wired to a "always hot" wire somewhere, You need to look up the wiring diagram for the stock radio and see if it's all wired correctly.
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Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
Transmission: 700r4, 2004R
Re: Radio Draining Battery
But I disconnected the speakers and the draw was still there it wasnt until the disconnected the radio that the draw left
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Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
Transmission: 700r4, 2004R
Re: Radio Draining Battery
But the radio doesnt turn on when the key is off, it will light the screen for a couple seconds then fade out
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: Radio Draining Battery
Like i said, you need to look at the stock wiring diagram for the radio. I have the wiring diagram at home, I can try and scan it and make a copy later this afternoon, unless some one else can.
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Car: 1967 Camaro, 91 z28
Engine: Lb9
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Re: Radio Draining Battery
If the radio isnt turning on without the key turned to the accessory position sounds like the radio is bad and the power supply or a cap is drawing to many amps when the car is off.
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Re: Radio Draining Battery
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From: San Antonio, Texas
Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
Transmission: 700r4, 2004R
Re: Radio Draining Battery
So the radio should turn on without the key in the on position
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From: WI.
Car: 1987 iroc
Engine: 383 TPIS intake, Dyno Don headers
Transmission: 700R4 w/Pro-built Auto/transgo 2-3
Axle/Gears: 3.27/3.70 borg warner 9 bolt
Joined: Dec 2004
Posts: 16,694
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Radio Draining Battery
LOL, no the radio has a wire hooked to the ignition switch circuit so the radio will only have power in the start or accessory position. all radios wire up the same this schematic is from 92 so im not sure if there is any wire color change but as you can see in this picture the wire is brown.
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Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
Transmission: 700r4, 2004R
Re: Radio Draining Battery
Lol okay thanks ill take a look maybe its wired elsewhere
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Re: Radio Draining Battery
LOL, no the radio has a wire hooked to the ignition switch circuit so the radio will only have power in the start or accessory position. all radios wire up the same this schematic is from 92 so im not sure if there is any wire color change but as you can see in this picture the wire is brown.
The accessory wire is yellow, not brown.
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Car: 1987 Camaro Z28, 1989 TTA #922
Engine: lb9, 3.8L turbo
Transmission: 700r4, 2004R
Re: Radio Draining Battery
Does the yellow accesory wire apply to all third gens?
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
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Transmission: M20
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raymondandretti
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Sep 27, 2015 06:43 PM









your right

