Its called a dual power adapter by power solutions. the number is 800 536 4995 and I think he is still in busines. Its kind of a neat deal. You use an extra cord which plugs in direct to the 2nd ac which is on a 20 amp circuit. When not in use the 2nd ac works as normal. On our rigs with the auto management it works g reat but it also works on 2 roof airs without the management system or on a 50 amp rig when only 30 is available. These basement air systems on 30 amps won,t hack it in extreme heat. I think all these newer large coaches should have been made with 50 amp and I was disapointed until I installed this unit. Once during a winnebago outing on a very hot day I noticed out of a dozen rigs with basement air only 2 were able to hold the temp to a comfortable level. They were both 50 amp rigs. None of the 30 amp rigs could keep the temp much below hi 80,s. Wwhen the capacity gets real hi the first thing to go is the electric waterheater and this is no big deal but next is the 2nd ac and when that shuts down the temp diffferance is about 10 degrees. 80 degrees inside is not bad when its105 outside but 90 is misserable.
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03 Itasca suncruiser 35u,W-22, Banks exhaust and CAI, ultrapower reprogrming, Taylor wires, Koni,s, M&G brake system,
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