1972 Duster Build with my Daughter

@MaxPF so hot day and went for a drive. The clutch started slipping at stop... got home and looked at the pressures... they were high so I removed some R134A and now have about the 80% of the R12 value. Also the drop across the switches seems to also be part of the problem. I jumped straight to the battery and it engaged hard. Wired in a relay as a test and so far with the right level of freon and a full battery voltage on the coil it seems like it is working great. If this solves it I will wire in the relay a bit more stealthy and much more professionally.