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Old 09-15-2019, 10:25 PM   #1
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How do i know what wire colors to use when installing ac in a prepped unit

I have a 2018 Rockwood 2780WS 5th wheel trailer.
Its a 50 amp service with a second AC prep.

I have researched and can't find the information i need...
I pulled the bedroom fan surround down yesterday and found 6 individually capped wires..
Black, Blue, Red, Purple (They were all laying together) and a White and White with a Black Tracer laying together.

There is a sticker above my bedroom light switch saying AC Prep Sensor Location

Most of the info i have found about installing an additional ac doesn't show the wiring.

Ive been told I'm out of luck trying to get a wiring diagram from the factory.

My thermostat also has a zone option. It doesn't let me change it to Zone 2 but I'm assuming it has 2 zones.
I pulled the thermostat back and saw 3 cut wires coming out of it. Red, Yellow and, Green.

Any info is greatly appreciated. I am pulling out my hair trying to figure this out!
-Chris
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Old 09-16-2019, 05:04 AM   #2
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Quote:
Originally Posted by CB90 View Post
I have a 2018 Rockwood 2780WS 5th wheel trailer.
Its a 50 amp service with a second AC prep.

I have researched and can't find the information i need...
I pulled the bedroom fan surround down yesterday and found 6 individually capped wires..
Black, Blue, Red, Purple (They were all laying together) and a White and White with a Black Tracer laying together.

There is a sticker above my bedroom light switch saying AC Prep Sensor Location

Most of the info i have found about installing an additional ac doesn't show the wiring.

Ive been told I'm out of luck trying to get a wiring diagram from the factory.

My thermostat also has a zone option. It doesn't let me change it to Zone 2 but I'm assuming it has 2 zones.
I pulled the thermostat back and saw 3 cut wires coming out of it. Red, Yellow and, Green.

Any info is greatly appreciated. I am pulling out my hair trying to figure this out!
-Chris
This thread may have some useful info.
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Old 09-16-2019, 05:05 AM   #3
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Pulling the shroud off the the first unit should give you some insight.
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Old 09-16-2019, 08:03 AM   #4
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White and black with a tracer should be 12 volt. Romax would be your 120 volt.
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