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Old 01-24-2022, 07:20 PM   #1
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A/C Swap help

Hello, first off thanks for reading. So I have a Coleman Mach 3 AC unit that is shot. I had a service tech out, replaced the fan etc. I decided to upgrade to a Dometic Brisk Air II. Install seemed to go fine until wiringÖ

No new control panel in the box or any installation instructions. The old wiring harness is a 9 hole female receptor, whereas the new one is a 6 hole receptor.

Is there a part adapter for this, or do I need to change the harness and thermostat all together? I know little to nothing about AC units or wiring. I know I have a ducted and 1 zone thermostat. It also controls heat as well. I was assured by camping world it was plug and play. Any help
would be appreciated. Iím a full timer due to circumstances and Florida gets hot. Thanks
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Old 01-25-2022, 07:13 AM   #2
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There are a few out there like this one:

It's probably best to call to make sure you're getting the right one.
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Old 01-25-2022, 09:05 AM   #3
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This kit is for the revers swap out of what you are doing the wiring diagram may be of some help. I would review the wiring prints of both old & new units before though.


This kit should be what your looking for. Someone in the Q&A did the same swap your doing and it worked.
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