Forum Discussion
RoyB
12 years agoExplorer III
I have one of these in RV TOOL box to test my truck light signals first...
If it all works here then the trouble is on the trailer side...
Got mine from AMAZON

It could just be your truck 7-way socket - spray some WD40 into it and work your 7-way plug around a couple of time and see it that clears it up... I do this every time before hooking hook...
Roy Ken
If it all works here then the trouble is on the trailer side...
Got mine from AMAZON

It could just be your truck 7-way socket - spray some WD40 into it and work your 7-way plug around a couple of time and see it that clears it up... I do this every time before hooking hook...
Roy Ken
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