I have a factory 7 pin trailer hitch installed on my 2010 Silverado that I spliced a 4 pin connector into, after a year the left turn signal now does not blink on any trailers. Cause?

Asked by Jan 05, 2014 at 07:56 AM about the 2010 Chevrolet Silverado 1500 LT1 Ext. Cab 4WD

Question type: Maintenance & Repair

I had spliced a 4 pin receptacle into the harness for a rear LED light bar.  It worked fine for a year or two and now the left turn signal does not blink on the 4 pin or 7 pin connector.  The running light still work, just doesn't flash.  I metered the 7 pin connector and  I am not seeing the pulse of current I see on the right side.  Any thoughts would be appreciated.  Thanks.

3 Answers

20,085

Most newer vehicles have separate fuses for the trailer wiring. Check all your fuses. Even the left and right turn signals have a separate fuse for each side.

Best Answer Mark helpful

Thanks tuff4x4. I checked the fuse block and that fuse was burned out. I'll replace it and check it out.

20,085

Glad to help.

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