Windsheild Wiper Wiring ??????

I am working through the same problem, but I am trying to replace the wiper switch too. I am pretty much an expert on wiring automotive, but the mopar setup is a bit confusing. One thing I am positive on is that the pink wire is power input into the wiper circuit, and the brown wire that goes through the resitor is the low speed power. I have isolated the wiring from the factory harness and will be hooking it up on the bench to try and figure out the rest. I am going to see if there is a way to adapt the aftermarket 3 wire 2-speed switch to a factory 3 wire system. At worst, I will have to use the factory switch with a new knob.