Blower running all the time

[1bad79]

my 1979 cutlass heater motor runs all the time on low when the key is on even when the top lever is in the off position my issue is I can't seem to find a correct diagram with the relay that's mounted to the hvac box every one I have found just has the switch and resistor block but no relay does anyone have a factory manual with a diagram
They can share with me so I can fix this thanks

 

[1bad79]

Do I just tried it out again it hasn't run in a few years and it worked as it should but about the third time it stuck on I unplugged the off screen- heat switch and the fan speed switch from the hvac controls and it's still running do I guess the relay is stuck on?

 

[airboatgreg]

It is designed to do that for ventilation

 

[MrSony]

Here's a diagram. Straight from my Haynes Manual. Hope it helps.

 

[MrSony]

It may also be that your blower motor is bad. I think mine is bad too, as it screeches and it only works on one setting and only blows through the defrost vents.

 

[1bad79]

It is designed to do that for ventilation

I just found a complete diagram and ya it looks like the yellow wire to the resister block is hot all the time I may change that the fan running annoys me lol

 

[1bad79]

So I unplugged the thermal switch up under the dash and now it functions the way I want it to, I had no relelection of any of my g body's doing that it always blew heat when the box was broken before I temped to tell my wife I can't fix it so she won't ride with me lol

 

[1bad79]

here is the switch