Hey guys,
I'm helping a friend restore his 51 GMC. We found new heater controls and are having a difficult time installing them. My question is, can anyone tell me where to mount the capillary tube? Does it drop into a heater duct?
Ok, I'll admit here that I was born in '73. What does this capillary tube do? How does it work? I have the factory manuals for this truck and they aare not telling me anything about these kinds of controls.
Any help here would be appreciated. Thanks
Dan
