1972 Duster 340 M&H wiring harness

I finally installed the harness on Sunday and everything went well. The A/C wiring is just one wire that goes to the compressor. While doing some research on the 72 service manual I found that the wire going to the compressor should go first to a low pressure switch that goes on the drier. There is no low pressure switch on the drier of this car and the A/C wiring just goes straight to the compressor. So, I guess I now have to get a low pressure switch and put it on the drier and make all these wires longer... Oh the joy of working on these old cars :rolleyes: