I’m looking to connect my heater which is located next to the driver seat of my 2006 Thomas freightliner. It was disconnected when I got my bus with no control/switch. I have the wiring except for the harness to plug into the controls. I found the control online but having a hard time finding the specific harness. Can you just get a generic harness and modify it somehow to match the wiring of this plug or do you need a specific one? I also don’t have the controller so I need to buy that too.