I had a post a while back on this but I've gotten the parts and at least had a try now. The story is that I have '82 K5 with the wiper/washer in one unit and the switch on the dash. What I want to do is convert the washer and wiper motors to the seperate 84-91 style motors. I snagged the washer motor out of an 85 'burb and tried hooking up to my setup. Plugged the pink and white wires into it, hit the switch and nothing! What I can tell is that the white wire is hot and recieves 12 volts when the ignition is on. The pink wire supposedly runs to the switch and what happens is when you bump it, it closes the ground. I have no idea why this wont work. I tried it on the '81 and the same deal. Should I swap in the '85 wiper motor in mine then try it.