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Electrical Issue Signal/Reverse/Brake on Left side only. 850 1994

How did you test the grounds?

I favor running a new, good ground.

I had a 740 that tested good for voltage, but no light. I finally stripped the wire back, and a foot from the connector, the was only one strand of wire left and lots of black gunk.

Reading voltage or resistance can fool you into thinking that the circuit can satisfy the load. You might measure amperage as well.

I would suspect a ground problem as you are not blowing fuses.






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