Very nice car - glad it ended up in the right hands.
Regarding the a/c, is it autotemp or manual controls? If autotemp, I can give you some leads to follow to get it working correctly. That is important in California, at least in the summer.
Good luck with the ride!
For some unknown and seemingly futile effort, Chrysler wired the a/c clutch on all the time for the 1973 C bodies. That means every time you start the engine, the a/c is operative. I believe I recall the reason was to avoid suddenly steaming the windows when heat was called for in the winter, yet there was excessive moisture in the evaporator. Running the a/c all the time of course took care of that problem, but created more problems than it was designed to solve it seems to me. The move meant a/c breakdowns probably very early in the life of the vehicle and poorer fuel economy than those smog engines already delivered. I have not looked into the best way to shut the compressor off, but certainly a toggle switch put in series with the a/c clutch wire should take care of the problem. I am not sure, but perhaps a different head control from a previous year would already contain the correct internal wiring (this assumes the control unit you replaced the original one with was the correct for 1973 part number). The wiring diagrams are most easily found in the service manual for the 1973 models.
The biggest improvement so far was installing new KYB gas-a-just shocks - made a HUGE difference. Before it was very sloppy!
Great car! Question about the KYB shocks. Up front, I see from the KYB website that the '73 needs the KG4507, but the KYB website does not list any KYB choice for the rear. Neither does RockAuto. Schockwarehouse simply does not carry any KYB shock for the '73 rear.
Summit does recommends a KYB model for the rear, the Excel-G 343159 (there are a few other choices).
Seems right, or am I missing some KYB choices? What did you use for the rear?
PS: I've had the same problem finding rear shocks in the case a 1973 Imperial -- but another member ended up buying "Elsie" from me before I started restoring her, so I never got to the solution.
hey , hav'nt we met , lol .