[Elkhunter]

Just throwing this out there for completeness. The fuses to be checked were:

The relay would be R6 (but should be all or nothing here:

Assuming all is good, and and you said you’ve confirmed no power at the switch, you might check the wiring coming into the switch. The wires coming into the door in the gap between the door and the body are weak spots.

 

[Elkhunter]

You need to use a ground as both are positive. This will help -