2nd Gen Non-Engine/Transmission HVAC Mirror Heat

[HPSimpson]

HVAC Mirror Heat

How is these three wires connected for mirror heat?

 

[SSolderitch]

What year truck is your truck? they go thru the same plug as the powered mirror wires and have a button in the heater controls (lower right corner). Are you looking for fuse#, wire color, etc?

I checked a schematic... . from 10A fuse -hot (in run) pin #1, bark blue, ground pin #2 black/orange, pin 3 light blue/yellow to mirror heaters.

 

[HPSimpson]

I have a 1996 Dodge, have HVAC from 1998 I have two black wires from left door, and two from right door. My question is which wires go to ground the black ones and which go to switch? Since there are only three connections and four wires, hmm. Does matter which of the black wires that are connected. Do I also have to supply 10 amps to the switch.