Troubleshooting Utility Trailer Lighting Working on Suburban But Not on 2018 Honda Pilot

Question:

I have a utility trailer on which the lights work with my 2003 Suburban 7 way to 4 in line adaptor, but not with my 2018 H0nda Pilot or a friends Acura MDX. The trailer has incandescent lights. I installed the Honda wiring harness purchased from etrailer a couple of years ago.

asked by: Arlyn H

Expert Reply:

With your utility trailer lights working on your 2003 Chevrolet Suburban there is likely something wrong with the wiring on your 2018 Honda Pilot and friends MDX. I do see the Curt T-Connector Vehicle Wiring Harness # C56291 you got for your Pilot does tie into the factory connector and fuse panel. Be sure to check the fuse along with connector. A Test Light # PTW2993 can be used to check for power on the harness to verify you have power going into the module and see if power is coming out to the 4-way. If you determine the module itself is bad then I recommend switching to the T-One Vehicle Wiring Harness # 118760 as I have found the Tekonsha powered modules to be superior to the Curt.

expert reply by: Bud M