Auxiliary Heat Wiring
2 Heat only 2-wire systems 3-wire zone valves Series 20 and normally open zone valves 3 Heat only with fan 4 Cool only 5 2 heat1 cool heat pump with aux. Also relays can be used to switch higher draw accessories to reduce switch load and voltage drop. Pin On Wire Compare Aerpro Wiring Harness - suit Holden Isuzu 2003-2006 APP063 553223 Select another one or two products to compare. Auxiliary Heat Wiring . For southern states units must be at least 14 SEER. Place a jumper piece of wire between Y and W if you have a heat pump without auxiliaryback-up heat. A 7-way plug connects your trailer and tow vehicle and provides the required lights turn signals brake power battery hot lead reverse lights and ground. This works nearly identically to auxiliary heat but for emergency purposes only. They are PDFs and you can zoom in on them to a great extent in order to actually use them. Some heat pump systems can provide auxiliary heat. Check the Honeywell thermostat wiring dia...
