You can check clearance lights at the trailer plug, using your trailer battery. At the plug, use a jumper wire from the 11 o'clock to the 1 o'clock, 12 o'clock being the alignment slide. Don't forget to remove that jumper wire! I twist that jumper around the power wire to the tongue jack so I can check the system without looking for another wire. This does not check brakes. Not sure which pin will do that.
Tree
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Treeclimber
2703 Tow Lite
2002 Escalade
Bonita Springs, Fl. &
Andrews, NC
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