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Hi my name is Robert....
Wiring issues like this can be difficult to pin down. I would start at the fuse panel and check for power at the back of the fuse for that circuit, make sure the wires going to that fuse are not loose on the panel. From there it might require a volt meter and a long jumper wire to ohm out the wires to see where the break in the wire is. IF you have a meter and want me to explain that please let me know. Robert