3588587 and 72 Demon

harness is correct for 72. Fuse box part number is 3588198. Wiper plug seems to have a 3 speed configuration? Unless it was the same plug for both 2 and 3 speed and they just dropped a terminal on the switch??? Also the fuse box has 7 fuses and every wiring diagram I bought including the 72 Manual shows only 6 fuse locations?? I also don't seem to find the wiring for the square 3 plug relay bolted to the dash frame. Mine has a three pronged plug with wire colors being gray, brown w yellow trace, and blue with white trace? Any clarification on any of these items would be really helpful?