Trailer relays

Asked by Stephen Feb 21, 2018 at 01:49 PM

Question type: Maintenance & Repair

I’m having trouble getting the turn signals on my
trailer to work on my F350 Super duty truck I use to
pull trailers wth Would replacing the relay that are
for the trailer help out

2 Answers
26,800

oilyspill answered 6 years ago

Unplug trailer turn relay, either one, left or right, Use proper jumper wire between terminals 3 and 5 in the socket. Terminal 3 is hot all the time, you can see the fuse. The turn lamp should lite up, does it? That doesn't mean it will flash, but, should lite up.

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