how to hook up fan for defrost???? ASAP please

[sweet572]

ok my truck is a 72 and doesnt have a/c but my control is for an a/c truck and dont know what year its from my hot wire for my fan comes threw the fire wall then into a plug then to a nother plug but it dont match the clips on the back of my control unit here are some pictures i could hook a togle switch but i would rather it work off the original switch thanks in advance for any help

the front


the back of switch


the plug my hot fan wire goes to its on top of the box under the dash


the end of the plug that dont match my switch (brown,orange,red,blue/orange color of wires)


i guess what im trying to figure out is if i cut that end of what wires go to what letters on the back of the switch so i can control the fan on and off with it

[Aarons72s]

Do you have a chilton, haynes or other type of service manual for your truck? If yes look at the wiring diagrams for a/c and non a/c. If not someone on here probably has the witing diagrams for you. I do know that you will need the plug for the a/c blower switch. These plugs are avaliable from most of the vendors.
Aaron

[sweet572]

^^^
^^^
^^^

[sweet572]

Ttt

[Aarons72s]

See if this helps. And you will still need to buy the a/c switch plug.
Aaron

[sweet572]

thanks alot Aaron i hooked it up tonight and it worked perfect you saved me a ton of time thanks

[Aarons72s]

no problem
Aaron