Turn signals on truck worked fine, there was a bad wire for rt turn signal on trailer, no juice at connector prong. I spliced into the right turn signal wire for truck and wired to rt turn signal wire on trailer connector. rt turn sign prong on trailer works now but left turn sign on truck doesn't work now. It blinks fast like a bad bulb but bulb is OK, fuse OK, any suggestions, Thanks
You need to replace the turn signal flasher with a heavy duty one.
SOURCE: 1987 toyota camry s/w back
Problem solved, Since 3 of the 4 turn signals worked I did not fuse was a problem
but after checking the turn swithch, I pulleded out the fuse which looked ok, but when
I put it back in all the turn signal lights woked! Apparently just one part of the surface
of the fuse was corroded.
SOURCE: LEFT TRAILER TURN SIGNAL DOES NOT WORK
I'd get a 12vdc test light if you don't have one already & start from plug, and keep probing back from there. It may be as simple as a bad connection under truck where joined into harness.
SOURCE: LEFT TRAILER TURN SIGNAL DOES NOT WORK
I have seen once before that the fuse box was bad on a 2003 Dodge 3500. I had power in and nothing out. We had to replace the box. Not cheap! Hope it is simple like a loose connection though. I think I had to pull the inner fender on the drivers side to access the bottom of the fuse box. Pain in the ****, but...
SOURCE: left back signal light doesn't work but front one flashes really fast
Check and replace the bulb first before you do anything else.
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