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It is generally not recommended to rearrange the pins on a wiring harness or a head unit as it can result in damage to the unit or create electrical problems. Instead, you may want to consider using a wiring adapter or a different wiring harness that is compatible with your aftermarket head unit.
Wiring adapters are designed to connect an aftermarket head unit to a vehicle's factory wiring harness, allowing you to install the new head unit without modifying the original wiring. These adapters are available for a wide range of vehicles and head units and can make the installation process easier and more reliable.
If a wiring adapter is not available for your vehicle, you may need to use a different wiring harness that is compatible with your head unit. Some head units come with a universal wiring harness that can be used with a variety of vehicles, or you may be able to purchase a specific wiring harness for your vehicle and head unit combination.
Overall, it is generally best to use a wiring adapter or a compatible wiring harness rather than attempting to modify the wiring yourself. This can help ensure that the installation is safe and reliable and can prevent potential damage to the head unit or the vehicle.
Your wiring concerns may be more with the thermostat wiring connections than the condensor connections. if you look inside the cover of the evaporator unit (usually called air handler) there should be a wiring diagram glued to the panel cover. This diagram will show all 3 units (stat,cndsr, airhndlr) and the wiring needed between them. Trane and Lennox are notorious for having the most wiring between components. You also need to be sure the stat is the correct type for the system (i assume this is a heat pump system) and there can be as many as 9 wires from stat to system and 6 wires from inside to outside units. Also, the stat will have a wiring diagram with it that shows most typical system wiring including the wiring between in and out units. Your best bet (if you have no diagram on the unit or with the stat) is to call trane and have their tech division fax a diagram to you. Goodluck,Macgivor
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