Okay boys, what did he do wrong?
So on this GMC K2500HD I bought the owner had a LED back up light installed, they used those things you put on the wires and then squeeze shut with pliers and it saves you time as it is quick, anyway...
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This is a typical wiring pictorial for the 7-way trailer connector.
Most of the time the center pin is use for BACKUP lights.
Confirm this with a MULTIMETER to be sure...
Photo from GOOGLE IMAGES
also note in my case my FORD truck ignition key must be turned ON before I get any DC readings going back to the trailer connector.
Roy Ken
Most of the time the center pin is use for BACKUP lights.
Confirm this with a MULTIMETER to be sure...
Photo from GOOGLE IMAGES
also note in my case my FORD truck ignition key must be turned ON before I get any DC readings going back to the trailer connector.
Roy Ken
