Jul 07, 2022     AC Wiring       Category: Air Conditioning

Starting to figure out the schematic coding for the various wires and connectors. I think... The wire bundles are fairly well laid out but locating the labeled wires and connectors in the schematics is a little difficult. I find that adding my own labels really helps. I think A - goes to the Console. B - goes to the back of the Evaporator/Blower. C - Power Supply. 67A and 67B are faston's to the Thermostat. From the schematics it looks like it doesn't matter what side of the Thermostat terminals are connected to. TA was to the Temperature Sensor. 67 and 67A use a unique plug connector to the Pressure Switch. The male side of the B plug needs work. The pinout in the B connector doesn't match the wiring diagram. The male side of the B connector has V1,V2, V3 and 0 coming out of the blower resistor inside the blower box. It also looks like a re-circulation servo on the rear bottom of the blower box with two wires labeled MR+ and MR-. I cannot locate these on the schematics. The female side of the B connector has V1,V2, V3 and 0 but has RA+ and RA-. I can't find these on the schematic either. I've reached out to Luiz at SFSA for guidance.