Turning on the rear wiper using the steering column switch on my '96 was always a crap shoot as to whether the wiper would actually begin to function as it should. Four winters I have put up with this wishy and not washy garbage. No longer! I did perform all the tests proscribed by the FSM, and the unit passed, BUT the wiper still did not always work. Then I noticed that the little black box (the actual relay switch) on the circuit board was a little loose. Presumably from 16 years of slamming the lift gate. Must have been internal because the factory solders looked solid. I just opted to replace the thing. I checked the factory wiring diagrams and confirmed that our relay is an SPDT.
Inside the relay box is a circuit board with a black box attached to it. This is the actual relay switch. Buy the new one pictured below. Unsolder the old one. Solder in the new one. Put it all back.
Below, the new part is on the left, the old one still in place.
Inside the relay box is a circuit board with a black box attached to it. This is the actual relay switch. Buy the new one pictured below. Unsolder the old one. Solder in the new one. Put it all back.
Below, the new part is on the left, the old one still in place.
