Heater Blower problems

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sky6099

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Dec 6, 2011
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murfreesboro
I have a 72 plymouth 340 duster my heater blower and dash lights will not go on .. I found a plug in under the dash thats hot but there is nothing pluged into it..Its a Two prong plug in with four wires coming out the back.. I put a fuse in it just to see what happens and when I did that my blower motor came on, but it ran constantly and the heater switch would not control the blower at all and my dash lights also cam on.. Now I just need to figure out exactly what plugs into that two prong plug anyone have any Idea?
 
Wire diagrams here:
http://www.mymopar.com/index.php?pid=28

Trace out the heater motor circuit on a sheet of paper, attach it to a clip board, and trace out the wires in your dash keeping track on the clip board what was inspected.

Orange wire supplies dash lighting.
 
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