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Old 10-28-2018, 06:19 AM   #1
DaBryce98
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Question So I have this wierd problem

So my 90 764 t is being wierd, and through all the wires I've traced I haven't figured it out yet. When you hit the left turn signal the rear fog light indicated and the rear fog light switch dimmley illuminate with the flash, also when you hit the brakes they dimmley illuminate, and if you hit the left turn signal while on the brakes it comes on dimmley but does not flash and when you let off the brakes it starts flashing normal. You can hit the left turn signal before you hit the brakes and all is well. Any ideas on where to start with this one would be much appreciated!
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Old 10-28-2018, 06:22 AM   #2
mocambique-amazone
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Not weird
Simple























































Ground, check the ground
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Old 10-28-2018, 06:30 AM   #3
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I've checked in a couple different spots and was getting a good ground, I'll be going back through then today with my power probe, maybe I missed something! Thanks!
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Old 10-28-2018, 03:22 PM   #4
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The tail lights have ground wires connecting to nearby chassis ground.
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Old 11-05-2018, 09:38 AM   #5
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So I checked my ground and I have a good solid connection, no rust or corrosion. I found when I was probing that my turn signal is getting a constant .9 to 1 volt with the headlights on and when the brake is applied when the headlights are off. It's a pretty clean car and so far all wires have looked to be in good shape that I've checked. This one's got me stumped. Also my rear fog light switch is getting brighter when it flashes with my left turn signal, or when I hit the brakes.
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Old 11-05-2018, 09:25 PM   #6
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One thing you wouldn't think of is the main head light relay. Its the retangular relay on the relay panel under the passenger underside of dash.
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Old 11-06-2018, 12:41 PM   #7
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That will be my next check then, thank you for the idea! Hopefully that will be the problem,
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