11-26-2016, 08:30 AM
When I installed new thermostats several years ago, Newell supplied the wiring instructions as pictured below. I wired the front and back thermostats based on these instructions, with the front working perfectly and the rear having the problems which I have detailed. I prepared the color schematics posted yesterday based on Newell's diagram and the way I connected the wires.
I am going to do following today, and then I will get back to you with my findings and answer the questions you have asked. I will first determine if the white wire at the rear pin #4 is 12v negative. If yes, then I need to know if it is spliced somewhere in the coach to the blue wires at the thermostat (continuity). If yes, then I am back to square one and will need to swap control boards which takes some time. Second, I will verify that the front thermostat is wired as depicted in my schematic.
I cannot thank you gurus enough for the time and effort you have put in to help me solve this issue.
I am going to do following today, and then I will get back to you with my findings and answer the questions you have asked. I will first determine if the white wire at the rear pin #4 is 12v negative. If yes, then I need to know if it is spliced somewhere in the coach to the blue wires at the thermostat (continuity). If yes, then I am back to square one and will need to swap control boards which takes some time. Second, I will verify that the front thermostat is wired as depicted in my schematic.
I cannot thank you gurus enough for the time and effort you have put in to help me solve this issue.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica