2xRustler Posted July 10, 2016 Report Share Posted July 10, 2016 I have a 2014 SXT with LED Tail lights. I installed a Curt hitch and wire harness last summer. Everything worked fine. I mostly use the hitch for a basket or other accessories. The harness worked fine when I towed with it this spring. I got home this afternoon in my Focus and noticed the right rear turn signal bulb was lit on the DJ. The DJ had not been touched today. I got in the DJ and turned on the flashers, The light never went out but got brighter when it blinked. I took the tail light assembly off because I was going to pull the bulb. I decided to disconnect the T-connector and plug the factory harness into the bulb. After this, the light acted normally. The problem has to be in the T-connector and/or converter which is all one unit. The fuse is not blown and all connections seem to be ok. I have not had any to dig further. Does anyone have any suggestions about where to start? dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 11, 2016 Report Share Posted July 11, 2016 I used the Mopar harness. This harness has a series of Relays wired into it. Does the Curt harness have any relays? Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 11, 2016 Author Report Share Posted July 11, 2016 I used the Mopar harness. This harness has a series of Relays wired into it. Does the Curt harness have any relays? No relays, there is a fuse on the power wire. The harness has the connectors for the the tail lights and turn signals to piggyback onto the signals from those circuits. There is a little black box (converter) that is powered by the power wire and converts the separate turn and tail lights (5 wires) into 4 wires for the trailer, and supplies power for the trailer lights. It appears that the converter is malfunctioning and sending all the power to the right turn signal circuit. ` dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 11, 2016 Report Share Posted July 11, 2016 What happens when you plug your trailer in? Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 11, 2016 Author Report Share Posted July 11, 2016 same thing.. The right rear light lights up and nothing else works. dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 12, 2016 Report Share Posted July 12, 2016 (edited) Has to be a bad converter in the harness. Can you unplug the harness, and plug the tail lights back to the way they were? Do they work properly? Edited July 12, 2016 by dhh3 jkeaton 1 Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 13, 2016 Author Report Share Posted July 13, 2016 All is well with the car when I unplug the harness. I ordered a converter that I will wire in this weekend. I'm curious what fried the first one dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 13, 2016 Report Share Posted July 13, 2016 Seems odd that it would blow before the fuse melted. Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 16, 2016 Author Report Share Posted July 16, 2016 The converter is in fact bad. I wired in a new one and everything works as it should. It appears that sometimes the internal wiring will go bad and send all power to one bulb. The fuse won't blow because there is only the draw from one bulb which is not enough to overload the circuit. dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 16, 2016 Report Share Posted July 16, 2016 Weird! Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 16, 2016 Author Report Share Posted July 16, 2016 Yeah, it is weird but it's fixed. we'll see if it lasts while towing tomorrow dhh3 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 17, 2016 Report Share Posted July 17, 2016 Good luck Quote Link to comment Share on other sites More sharing options...
2xRustler Posted July 18, 2016 Author Report Share Posted July 18, 2016 It worked out just fine. The kayaks on the roof created a crazy amount of drag and it was windy. Averaged 16.8 MPG jkeaton 1 Quote Link to comment Share on other sites More sharing options...
dhh3 Posted July 18, 2016 Report Share Posted July 18, 2016 Nice shot. Glad that it all worked out. Quote Link to comment Share on other sites More sharing options...
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