Intermittent Wiper Mod

[obnoxiousblue]

I've read of people installing the wiper wiring harness from a 78 Champagne bus into a late mode bay. I've looked, and my bus does have the block off plate in the wiper switch, and it does have the extra position for intermittent wipers. I've bought the harness, and now need to install. Obviously the plug ony fits on the wiper motor one way, on one end of the harness is a small black plug. I assume this plug goes into the switch on the steering column somewhere?
The other end and has a few "loose" (bound in loom, with VW factory crimp on connectors. I'm again assuming this end is meant to go to the wiper relay. Goes anyone know what goes where? Anyone with ay experience having had installed a intermittent system in your late bay?