Re: Bypassing 71 anti diesel & blocking relays
You can leave the pink wire if you want to, I did, but according to the wiring diagram when the ignition is turned off the pink wire triggers the anti-dieseling system. The blocking relay disconnects the compressor from the rest of the cars electrical system and the anti-dieseling relay is a time delay that turns the compressor on for a short time. The idea was to add some load to the engine so it wouldn't diesel. The compressor has to be isolated by the blocking relay or the anti-dieseling relay would "back feed" power to the ignition system and the car would keep running.
Just so you know, every time I've buttoned up my dash "forever", that only lasted a few months at most. I'm always coming up with dumb ideas for the Chevelle which requires digging into it again.