[AZKen]

Unplug connectors. I don't see the dark colors in you pic very well. Your diagram does not match the colors on my info or your actual. If I am seeing it correctly. Here is what I have. Using your color sketch as ref: Connect terminals for DB and LB together and to ground, power to terminal for Yel WITH inline fuse, this is LO, disconnect DB, this is HI. Keep DB and LB jumpered but not to ground, this is off. If you had a proper switch you could test with connectors connected and IGN on. But you don't so need test wire from battery and jumpers. For this test you need to be sure you have battery/power source neg continuity to wiper motor case.