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?
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.