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Old 07-11-2002, 05:19 PM
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Intermittant dash lights

The lights on my 1988 300e dash cluster have been acting weird, specifically antenna, rear light, rear headrest, sunroof, shifter and window switches. Yes, I've replaced the bulbs where possible, but I noticed something else - there are two different harnesses for the switches on the dash. All of the switches for one harness light up but the switches for the other harness do not. As I've traced this out, I found that the problem is with the blue/white wires going to the switches/bulbs and not with the ground. There is obviously just a bad connection somewhere because they come on every once in a while but where does this connect? I opened up the dash and found where about 5 wires connect to two different screws but they aren't getting any power either. So, anyway, like I already said, does anybody know where this blue wire eventually connects?

Thanks in advance


oh, by the way, if I can't find out where it connects, would it cause any harm to just solder a jumber between the two harnesses?
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Old 07-11-2002, 05:53 PM
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Join Date: Jan 2001
Posts: 78
Has the instrument cluster been out recently? Did these lights go out afterwards? Pull out the instrument cluster. There is a three pole connector (I think there are only two wires in the connector, though... it's been a while since I had one apart) next to the clock wire. It probably isn't connected to the cluster. This is what supplies the power to shift, fader, rear window defroster, mirror switch, window switch bulbs, etc. Everything else gets power from another connector.

Scott P.
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