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TOPIC: Need help indentifying wire

Need help indentifying wire 21 Aug 2012 17:51 #10352


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I am in the process of replacing my dash light bulbs and found a wire that had grounded out and was bare. It has power to it. It looks like it would go to the fog light switch. It is lime green. it is in the harness to the fog light but goes nowhere and is just hanging there. I have had problems getting my dash lights to work and was wondering if this was the culprit. any help would be greatly appreciated. thanks
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Need help indentifying wire 21 Aug 2012 18:32 #10353


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Did you check the Technical Tips area for wiring diagrams and/or pod replacement? Not sure you will find your answer there, but you never know. I have not taken my pod off before, so I am ZERO help on this one.

I am sure someone will chime in here before long... I know we have several members who are active on this forum who have taken the pod out of their car more than once, they will probably have a clue.
James
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black
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Need help indentifying wire 21 Aug 2012 19:32 #10356


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I don't know that you will find wiring diagrams, although I did find one at Dwayne's site: http://dwaynesgarage.norcal928.org/Pod%20Removal%20and%20Instrument%20Cluster%20Repair%20I.htm
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Need help indentifying wire 22 Aug 2012 07:14 #10369


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Is your fog light switch functional? There are just two wires that come from your dinner switch on the same side of the instrument pod. Perhaps the bare wire is the power supply for the dinner though it seems doubtful since I don't recall that wire to have lime green insulation. I bet you need a new dinner switch and that the bare wire is a separate issue altogether.
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Need help indentifying wire 22 Aug 2012 08:34 #10382


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Almost impossible to answer without knowing the model year - lots of differences between a '78 and a '95...

I have never seen any wire color other than black/blue on the dash light circuit.

Find the dimmer for your dash lights (location varies with model year), check for 12 vdc on both sides (dash lights on). If no power on either side, check the fuse (location varies with model year) and its connections. Power on one side only, clean the dimmer, or simply connect the two leads, eliminating the dimmer - most people feel that the lights aren't bright enough anyway.
Wally Plumley
928 Specialists
www.928gt.com
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Need help indentifying wire 22 Aug 2012 09:34 #10384


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Sorry, my car is a 1983 928s. The only thing I can tell that is not working is my dash lights. I put new bulbs in and nothing.
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Need help indentifying wire 22 Aug 2012 09:43 #10388


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wallyp;10705 wrote:
Almost impossible to answer without knowing the model year - lots of differences between a '78 and a '95...

I have never seen any wire color other than black/blue on the dash light circuit.

Find the dimmer for your dash lights (location varies with model year), check for 12 vdc on both sides (dash lights on). If no power on either side, check the fuse (location varies with model year) and its connections. Power on one side only, clean the dimmer, or simply connect the two leads, eliminating the dimmer - most people feel that the lights aren't bright enough anyway.

First connect the leads as Wally suggested so that you can either rule out or conclude that the dimmer switch is/isn't the fault. Then report back.
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Need help indentifying wire 22 Aug 2012 12:05 #10392


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The only green wires that I see in a quick scan of the '83 wiring diagrams include:
- The tach lead. If the tach works, probably not your cut wire.
- Heater control to defroster flap solenoid. If the air changes to the defrost nozzles when you move the lever to defrost, probably not your wire.

I don't remember ever seeing what I would describe as a "lime green" wire on a 928 - doesn't mean that there aren't any, just that I don't remember one.

Does your car have an aftermarket alarm system? An aftermarket stereo system? Radar detector? Any other electric/electronic devices?

If you really want to identify the cut wire, please attach a voltmeter to the wire and to ground, and check for power under these conditions:
- All the time.
- Ignition switch on.
- Engine running.
- Ignition switch on, lights on.
- Ignition switch on, HVAC on DEFROST.
- Ignition switch on, various lights on.
- Ignition switch on, anything that you can think of...
Report what you find, precisely and in detail.
Wally Plumley
928 Specialists
www.928gt.com
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