I turned on my left turn signal, and my wipers came on. Tried my horn, and both the left turn signal indicator and the wipers came on. WTF?
Weird electrical gremlin
- Thread starter diggerwolf
- Start date
IOwnCalculus
TJ Enthusiast
The ground at the front left of the engine bay is disconnected - factory setup is a ring terminal on a 10mm screw going into the back of the grille.
That ground services the left front marker light, the washer motor, and the horn - I suspect with the ground disconnected, it manages to backfeed through the washer motor, and since the washer switch now sees 12V, it triggers the washer cycle on the wipers as if you had bumped that stalk down.
That ground services the left front marker light, the washer motor, and the horn - I suspect with the ground disconnected, it manages to backfeed through the washer motor, and since the washer switch now sees 12V, it triggers the washer cycle on the wipers as if you had bumped that stalk down.
OP
IOwnCalculus
TJ Enthusiast
To be fair, I discovered this a couple weeks ago when I hooked the battery back up on mine while the grille was still on the ground.
I've accidentally found that before while doing some electrical work, but I never would have remembered it. Some of these circuits are pretty tricky.