Thanks a lot, that's great info.

The ACC was on min (I'm 99% sure) when the wires touched. So, then it sounds like the PBU was shorted?

A helpful mechanic told me (before the wires crossed) to check the voltage accross the 2 pins of the monovalve with the PBU on min. He said if the voltage was less than 1 volt, the valve was closed. If it was around 12 volts, the valve was opened and there was something wrong with the PBU. I did that right before my friend crossed the wires, and the voltage was 12 volts. So from what you and him are saying, there was a problem with the PBU before, and now it's a different problem, but still with the PBU.

By the way, where did you get your wiring diagrams from?

__________________
Gabriel
'91 350SD 162k
'83 300SD 210k - rear-ended and scrapped
'84 300SD 210k - totalled