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FMTV Gen 1 Air condition

Smittym1078

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Fort Worth
I just got the Red Dot Gen 1 evaporator. Planning to install soon. Does any one can help me out to find the wiring for Gen 1 A/C? Great help..
 

Smittym1078

New member
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3
3
Location
Fort Worth
I doubt the wiring is any different. I would recommend you just get the harness from Tom:


I posted the trinary switch pinout in my AC installation post in case you desire to change that out for a different model like I did.
I have GEN 1 red dot. Does it same wiring as the Gen 2?
 

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GeneralDisorder

Well-known member
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Show us the connections at the back..... but given that the Gen 2 basically plugged into the existing heater wiring and then only required the AC harness I linked to above I wouldn't think the Gen 1 would be any different. The AC harness has a 24v lead from the PDP (I ran mine to the 24v main relay and used an inline fuse), and then has connections for the fans, compressor, trinary switch, and fording switch (fan relay ground).
 

Smittym1078

New member
3
3
3
Location
Fort Worth
Show us the connections at the back..... but given that the Gen 2 basically plugged into the existing heater wiring and then only required the AC harness I linked to above I wouldn't think the Gen 1 would be any different. The AC harness has a 24v lead from the PDP (I ran mine to the 24v main relay and used an inline fuse), and then has connections for the fans, compressor, trinary switch, and fording switch (fan relay ground).
See attached
 

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