I tested the Cole Hersee wiper switch using a digital voltage probe, and here are the results:
Switch Position Switch Contact Voltage
OFF Battery 12.1 Park 12.1 Low 0 High 0
LOW Battery 12.1 Park 0 Low 12.1 High 0
High Battery 12.1 Park 0 Low 0 High 12.1
Based upon these readings, the switch appear to be functioning correctly. Each of the female spade connectors, on the wires connecting to the wiper motor, is insulated with heat shrink to prevent any accidental shorting between any of the motor connections, in that confined space. If I can't figure out the root cause of this fuse blowing, can anyone recommend another brand of vintage looking rotary wiper switch, that they have used, and know will work with the Factory Five wiper motor? If some sort of special wiring configuration is required, and of which I am obviously unaware, it would be greatly appreciated if anyone wanted to share.
Mahalo from Hawaii