Turn Signal Not Working when Using Brakes and Using Hopkins 40955 Wiring Kit  

Question:

Helpful Expert Reply:

Since you have a new trailer connector on your vehicle that tells us that the issue is likely on the trailer somewhere and it sounds to me like it is a bad ground.

Make sure all your ground connections are good and clean. There will be a ground connection coming from the trailer connector to somewhere on the trailer tongue and each of your trailer lights should have a ground connection through either a ground wire ran to the trailer frame or grounded through a mounting stud on the light assembly.

If the issue persists after you have checked all of the ground connections, you will want to check for cut, pinched or damaged wires. You could also use a circuit tester and test the wires at different sections of the trailer to see if you can locate where the signal terminates. I would also recommend checking the inside of the connector for any corrosion.

If there is a plastic license plate bracket, light brackets bolted to the trailer frame or if you have a tilting style trailer, then you will need to check each of these for ground connections as well. If you have a tilting style trailer, then you may need to run a ground strap from the tongue of the trailer to the tilting portion of the trailer to provide a solid ground through the hinge point.

We do have a diagram and wiring chart for 7-Way connectors, but the colors on the diagram may not match the wire colors on your vehicle, so make sure you use a circuit tester like part # PTW2992 to make sure you have the proper circuits. I have added a link at right to the page that has the 7-Way wiring diagram.

expert reply by: Chris O

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