Right blinker on trailer doesn’t work.

[gwash11]

Hi I have a problem with right blinker not working on trailer. It’s not just the one trailer that has a problem because I tried it with another trailer and the right blinker again didn’t work. Fuse is still good and just replaced trailer tow connector and problem is still there. Any suggestions?

 

[Loudram]

Check the connectors for power. The old fashioned 12v light bulb testers are perfect for this. Also check the plug behind the bumper. Make sure that's tight as well. The wiring diagram is on the cover.

 

[silver billet]

Hi I have a problem with right blinker not working on trailer. It’s not just the one trailer that has a problem because I tried it with another trailer and the right blinker again didn’t work. Fuse is still good and just replaced trailer tow connector and problem is still there. Any suggestions?

There are actually two fuses for the blinkers, one for the left and one for the right. I found that out the hard way as well when my right signal didn't work.

 

[Andymax]

and when it's plugged in to a trailer the truck's turn signal still works. correct? You replaced the F10 fuse in the external fuse box, correct?