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    Built-in Ambulance Heater/AC question and mod ideas

    I own this rig built by Travis.. I cannot seem to find out how he ran the system he explains.. maybe in due time I will find out, but currently I have to run the truck to run the AC.
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    Heavy Duty Wheels

    I’m running into the same issue with my ambulance. In fact, same weight ratings front and rear. I’m going to buy some Cooper AT3 with 129S tire ratings and some method 4500 lb rims. That should do!
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    McCoy Miller diagrams?

    Hey FDM, I’m following in your footsteps.. bought a 2008 Sierra 3500 McCoy Miller ambo. Did you find out any resources for wiring diagrams?
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    Ambulance Camper/ Expedition Rig Conversion FAQ

    I’m in the infancy stage of detecting which switch does what.. same in my case.. there is a group of 3 wires that run up to the sirens.. I connected them but can’t seem to get them to work just yet. Also I’m trying to figure out the air horn. I’m still in the infancy of trying to find out the...
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    Ambulance Camper/ Expedition Rig Conversion FAQ

    Hey CJKen... I have a 4x4 McCoy Miller also.. I have that same control board.. where is that siren green wire coming from? also did you unplug that wire on the bottom right of the picture? Or leave that connected? My board currently doesn’t have either of those plugged in in the back of board...
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