2003 ram 1500

well I think I know the answer but here it goes, maybe there's another solution?

all lights and blinkers work on the truck.... but when I hook up the truck to trailer all works except left blinker.

I did check all fuses with multi meter and all reads 14 v but the trailer fuses read around 7 alternating on the blink, i'm thinking they don't draw much....

am I going in the right direction?

I really don't know how to back track and a bad wire (to much) if there is any, where it T's to the connector and flat 4 there is no connection just tube connections.

do you think it may be a bad blade in the connector? thinking of replacing it.

I'm this close to bringing the truck down to a custom shop that does trailer wires......glenn

 

When you say the left turn signal, is it the one on the truck, the trailer or both?

 

all lights and blinkers on the truck work...BUT...when I hook up the trailer all lights and just the right blinker works . left will not work..... yes the trailer.... switched cars and everything works

 

That line is fed from a computer module under the fuse box in the engine compartment.
It looks like you may have a relay and fuse in the fuse box under the hood.

 

where would this rely be ? in the fuse compartment ? is a black block type?

 

Look inside the lid of the fuse box. It gives the position of each fuse, etc. I had this happen once and the fuse for the left trailer blinker was blown.

 

went to an RV shop and they spliced in a converter to the blinkers to the 7 blade , either that or try and back track a break in the wire and he said that would be insane....so now it works. now I can tow my boat without any tickets...

 

I think several people of had this type of problem and replacement of the fuse box fixed it. This is more expensive than doing what you had done.

 

I had a broken wire on my factory 4 blade. Lucky it was broken just above where it goes into the loom, otherwise I would have given up as well. It was for my right side blinker/brake light. Those wires back there take a lot of abuse. It would help if the connector was in a different location, instead of under and forward of the bumper. Difficult to reach and as a consequence gets tugged on more than it should.