Troubleshooting Trailer Wiring Where Running Light Circuit Stays on but Dim

Published 11/18/2021

Products Featured in This Question

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(50)

$70.58

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(44)

$97.42

Question:

This harness has been working for months now I have a strange issue. I have the 4 pin tester in the connector and this is what i see. When the car is off the Tail and RT lights are dim but on. When the car is running the Tail and RT lights are dim but on. When I use the Left Turn or Hazards the LT is brighter and the TAIL and RT stay on. When I use the Right Turn signal no chagnge. I have double and triple checked the ground but no change. Do you know what this could be?

asked by: Nick P

Expert Reply:

What you described sounds like a shorted out converter box. Especially since you already checked the connections of everything as well. Best option is to replace the kit with a new one. We have found that the Tekonsha converter boxes are the most reliable so for your 2012 Subaru Impreza the # 118573 would be your best option.

expert reply by: Jameson C