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ChuckS · 07-21-2019, 06:23 AM

The pre wired air conditioner wouldn’t have any 12 VDC there.

The new systems get their DC power across a 4 wire telephone cable. The cable would run from the Zone 1 AC unit electronic control module over to second AC ECM.

However ... I would have thought someone would plum that telephone wire from Zone 1 AC over to pre wired Zone 2 cutout area...

Else.. when adding second AC it would be a pain to fish the wire across the inside of attic area

07-21-2019, 06:23 AM	#10
ChuckS Senior Member Join Date: Mar 2014 Location: Mountain Home, Idaho Posts: 3,013	Finding 12V in 315RLS The pre wired air conditioner wouldn’t have any 12 VDC there. The new systems get their DC power across a 4 wire telephone cable. The cable would run from the Zone 1 AC unit electronic control module over to second AC ECM. However ... I would have thought someone would plum that telephone wire from Zone 1 AC over to pre wired Zone 2 cutout area... Else.. when adding second AC it would be a pain to fish the wire across the inside of attic area __________________ 2007 GMC Classic club cab 4x4 Duramax LBZ 2014 Alpine 3010 RE. 34 foot fifth wheel