I am going to check for that plug and see. Is that a solenoid based device?

Mine does have idle change when the compressor kicks in. As far as the idle goes It is not bad and once warmed up its livable, I just think it can be better and since this car does not have to be my daily driver I do not mind looking some of these things over through the course of a few days if need be.

The cars records and overall condition blow me away. Not a leak on it aside from that first 15 min warm up coolant drip. I have not had to add any coolant in the 300 miles I have put on it so far.

Man, everything around that IP is busy and buried. May best be seen from below?