Troubleshooting Curt 4-Way T-Connector Converter Box On a 2015 Honda Civic Si Sedan

Question:

I’ve purchased a Curt 56011 wiring harness and I am having the strangest issue. When I hook up all the wires correctly, the left side trailer light is not working properly. I have tried several ground wire spots and still no luck. Right side works completely fine. Would this indicate a converter box issue?

asked by: Ryan G

Expert Reply:

The best way to test the Curt T-Connector Vehicle Wiring Harness # C56011 while you have it installed on your 2015 Honda Civic Si is to use a Test Light # PTW2992. You are going to test for power going into the power converter from your Civic and ensure that power is coming out of the converter on the correct circuit. The converter box makes this simple to test since the wiring in labeled on the box(see image).

If you have power going into the box and nothing coming our on the appropriate circuit there is an issue with the converter. If you are missing power into the converter box be sure to check the connectors are completely connected with no terminals pushed out of the connectors.

expert reply by: Bud M