Blinkers Not Working On Trailer

Question:

They night lights are on but the signal lights are not working

asked by: Stan B

Expert Reply:

It seems like you may have an issue with your yellow and green wires on your 4-pole trailer connector # 18004. First make sure that each of your turn signals are grounded. There should be a ground for the taillights. If it is grounded remove the connection and scratch the surface to make sure it is making a direct contact with the bare metal. Sometimes the paint on the trailer will prevent the wire from being grounded properly.

If that doesn't work, make sure that the issue is not coming from your vehicle. Take a tester like this # PTW2993 and connect it to the farthest left two metal poles on your trucks 4 pole connector. It should flash like your blinkers would when you turn the turn signals on.

expert reply by: Adam E