Hi Larry,
My bad for not asking two or three speed first. Ok, shown here are two versions with part numbers 2864012 & 2864045 of two speed rallye rocker wiper switches. Both have the same wiring configuration and terminal positions. The B/U terminal is in a slightly different position between these two type of switches. With the wiper switch multi connector attached leaves the B/U (After internal circuit breaker) open for a power connection to drive the washer pump motor as ruderunner mentioned. Both types of switches had a barb sticking out preventing the typical single female connector from being attached. The correct connector had a dog house shape cut out to allow this connection to be made supplying power to the washer switch.
The brown - white tracer wire is used to create the middle speed resistance for the three speed wiper switch. The factory used the same dash harness with the brown - white tracer either folded back on the dash harness and taped or used on the three speed wiper switch.
Jim