Backup lights, wipers, switch

You may have a 2-speed wiper. Mine (67) is 2-speed and has 3 wires also.

I love that wiring diagram!

I see the power goes thru wiper switch "B" and thru internal circuit breaker and out thru B/U backup lamps switch.

Intresting.

68/69 the +12v feed for the BU lamps came from the white on the radio plug to the bulkhead. On the 67 the white +12v comes from the wiper switch to feed the BU lamps. Did not look at the diagram that close and I cadded it!! Good call RBob!