Heater box cable operation

[Fo-Mo-Co]

Can anyone make me a drawing or get some pictures of how the cables are hooked up and routed? Mine wasn't installed when I got the truck and I can't figure it out. Thanks

[fordman]

here is the factory. http://www.fordification.com/tech/AC-cables.htm some of these do the same thing.

[Fo-Mo-Co]

here is the factory. http://www.fordification.com/tech/AC-cables.htm some of these do the same thing.

Thanks for the link but mine is non AC

[Mancar1]

Don't know if this will help, but here is a pic out of one of my manuals. I hope the pic gets bigger when clicked on.

[F100builder]

It's been a while since taking these pictures so I hope this helps...The connection being pointed out with the ball point pen is the same one to which I'm pointing for both the heat/defrost cables. The cold to hot cable (3rd pic) goes through the firewall to the valve attached to the heater hoses.

[tybob81]

Very helpful pics f100builder.

[Fo-Mo-Co]

Heck yeah. Thats why my heat is on all the time. I dont have the valve on the heater hose on the firewall. Never had one. Thats a huge help. Thanks

[F100builder]

Try the salvage yard or someone on here might have one to sell. Anyone recall offhand if the '73-'79's have the same valve?

[ScreaminZ]

Heck yeah. Thats why my heat is on all the time. I dont have the valve on the heater hose on the firewall. Never had one. Thats a huge help. Thanks

Go down to the auto parts store. Any of them should have it and it's not terribly expensive. The replacement is plastic, which in my opinion is a good thing. Those original steel ones rust up and don't like to move. I used to work mine with a pair of vise grips because it was so hard to turn. My new plastic one works like a dream.

[F100builder]

Go down to the auto parts store. Any of them should have it and it's not terribly expensive. The replacement is plastic, which in my opinion is a good thing. Those original steel ones rust up and don't like to move. I used to work mine with a pair of vise grips because it was so hard to turn. My new plastic one works like a dream.

Good to know...I think I might have one of those hard to turn ones. I'll find out soon as I plan on putting my heater assembly back in. It'll be the first time in since I built the truck!