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Old January 13th, 2009, 10:46 PM
tomaco1's Avatar
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83 110
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Late model heater in my 1985

I was just wondering what I have to do to wire up my new heater and controls. I had the older 110 style heat/ac setup and am changing to NAS type. I have the harness that attaches to the controls, and the 3 wire plug that come out of the heater.
Control harness wires are: 1)black 2) green/yellow 3) green/gray

Heater end wires are: 1) purple/greenish 2) green/yellow 3) green/gray.

Unlike the NAS trucks, I believe my 1985 90 lacks harness that ties the two together. I was wondering what I have to hook up to get it to function like its newer relatives? where do I get the juice?

It seems the heater is out of a late model 90 2006ish.
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Old January 14th, 2009, 08:19 AM
TDI Guy's Avatar
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I changed the plug on the heater when I did the same to mine. Just wire the old style plug onto your new heater to plug it into the harness. I soldered the connections and heat shrunk them.
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