Troubleshooting Wiring On 2005 Kia Sorento When Rewired Trailer Lights Do Not Function

Updated 09/08/2014 | Published 09/04/2014

Question:

I live in Western Australia and have owned a 2005 Kia Sorento since new and had no problems with trailer lighting until I use trailers with LED lighting and then have no lights on trailer but still ok on vehicle? Any ideas as I am to thinking as the tow bar and wiring was after market it coul need a separate unit to activate LEDs Would apreciate your advice on this problem, thanks

asked by: Keith C

Helpful Expert Reply:

I have attached a link to a helpful article that explains how to troubleshoot trailer wiring. It could be a number of things that are causing your trailer lights not to function. The wire kits we offer for your 2005 Kia Sorento require a converter included because the Sorento has a separate wiring system. This means the brake and turn signals are sent along separate wires.

A couple of the causes for the trailer not to receive any voltage is that the converter is not properly connected to the battery, or a required fuse or relay is blown. You can use a circuit tester to make sure you are getting power to the trailer side of the connector. Test the wiring connector while the trailer is not connected. If you do not have power, then move forward until you isolate the problem.

expert reply by: Jeffrey L