You will need the power management module amongst many things before you can add in a third AC unit...
Does the “pre wired” option already incorporate this....
https://www.trekwood.com/products/57...re-For-3rd-A-C
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2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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