I have been trying to help Roger in New York sort out his wiring as he reassembles two coupes. The wiring diagrams are hard to read sometimes and if you have a 73 1/2 when window motors/switches/circuit breakers were added you have to use the early diagram as well as the 74 diagram.
There are six relays under the dash starting with the 73 1/2 models: Wipe/Wash #1, Load Shed #2, Window Load Shed #3, Window Load Shed #4, Changeover (for heater fan with A/C) #5 and the Hazard/Turn Relay #6. See the photos below:
There are six relays under the dash starting with the 73 1/2 models: Wipe/Wash #1, Load Shed #2, Window Load Shed #3, Window Load Shed #4, Changeover (for heater fan with A/C) #5 and the Hazard/Turn Relay #6. See the photos below: