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Someone removed some parts.

Rob, You stated: . I'm probably wrong, but I didn't think that EGR was related to the ECM electrics. I thought that the ECM was only regulating the M/C Solenoid, TPS, Coolant Temp,. If you look in the 1981 Shop Manual pages 8A-82 & 8A-83, you will see the ECM diagram and all that it controls...

1981 Wiper Documentation 1981 Switch Operation ================ 903 - Green - Delay On - Grounded in all but Delay Mode 141 - Brown - Delay - Open in all but delay 904 - Wht/Blk - Delay Amount - Variable Resistor 12 Ohm to 1 Mega Ohm 8 - Grey - Power fro dash lights 92 - Purple - Park Circuit -...

You're in luck, the Wiper circuit is correct. Although in my opinion it is lacking a full desctiption of the operation. Older GM manuals had much better detail in this area.

>> I may be picking your brain soon! Okay, but you might want to email me directly from my profile page since I'm not sure how regularly I'll be checking here. Regards, RonG

Vigman, Have you got things working yet? FYI - On my 1981 I kept getting a code set. Turns out the diode in the EGR solenoid circuit shorted out and blew the driver chip in the ECM. Since the EGR parts are no longer available, I hand repaired the old one. After running all tests and still...

Two items: 1) The 1981 GM Shop Manual has many errors. Mostly having to do with wiring diagrams and component locations. As best as I can tell, it appeats they used date from the 1980 model year and they did not go back and validate the contents. So, if you find discprepancies, your car may be...

Wiper Info The "special" cover consists of a pink(?) wire on the outside that goes to a metal strap on the inside. When the wiper makes one revolution and while in Delay mode the metal contact is grounded and that signals the module behind the passenger seat to shut the power until the next...