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OEM CD/Radio to Ignition Switch problem

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Old 05 Nov 2017, 04:28 pm
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Join Date: Jul 2009
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Default OEM CD/Radio to Ignition Switch problem

Gremlins on my 2004 GT High Output Turbo with stock radio/6 cd player. Infrequently the radio will not turn on or if on, no display. Jiggle the ignition key and it will come on and the display will light up.

Assume it is a loose wire at the ignition switch. Any advice on how to correct this??
How hard is it to work on the switch and what wire and markings will it be. I have no wiring diagrams.

Many thanks

2004 GT HO Turbo, 5 speed, one owner, 83K miles
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Old 05 Nov 2017, 05:25 pm
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Join Date: Sep 2010
Location: Walking distance to the embassy
Posts: 3,126
Default Re: OEM CD/Radio to Ignition Switch problem

Here is the wiring information for the ignition-switched circuit to the radio

Ignition switch connector pin #2, black/white wire to dash fuse block
Yellow/red wire from fuse Fuse #14 (20 amp) to radio (their is a splice)
At the radio connector pin #2, the wire color is red/white (changed at splice)

If the ignition switch is the problem, your front and rear wipers should also not work when the radio doesn't; the black/white wire to dash fuse block feeds both fuse #14 and fuse #15(wipers)

The ignition switch can be removed and disassembled and cleaned up
I had a tutorial on the forum until the vandals sacked the system and my library was lost
harry likes this.
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Old 07 Nov 2017, 06:40 pm
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Join Date: Nov 2015
Location: plant city fl.
Posts: 73
Default Re: OEM CD/Radio to Ignition Switch problem

push key in and see if problem goes away,works on mine
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Old 04 Feb 2018, 05:36 pm
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Join Date: Jul 2009
Posts: 16
Default Re: OEM CD/Radio to Ignition Switch problem

Yep, same thing with me.
Looking for a permanent fix.
Anyone have any ideas before I install my new Crutchfield Pioneer harness?
Gotta be a problem/connection at the switch.
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Old 05 Feb 2018, 09:14 am
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Join Date: Aug 2015
Location: Lake Wales, FL
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Default Re: OEM CD/Radio to Ignition Switch problem

On my 03 GT, I could get mine to function correctly by jiggling the tilt mechanism on the steering wheel. I put a zip tie around the connector that runs from the wheel to the radio and that fixed mine. I THINK it was the top one on the left, but not 100% sure. You'll need a schematic to look at to make sure you get the right one. I no longer have the GT to go look at.

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ignition wires, radio problems

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