Both blinkers flash for right and left
On my Flagstaff T12rb when I turn on either the right or left turn signal, both right and left flash. It has a 7 pin connector as does my truck. I tested the truck to make sure that side sends iut the...
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Good info above about some differences in 7 pin wire color coding.
If your clearance lights also flash then it is definitely a grounding issue.
If your clearance lights also flash then it is definitely a grounding issue.
