newbie2vette

One of the items on my list to fix on this 79 is the heater blower motor, it didn't run when I got it. Before I started on th work on it, it started to work and it stop again.
So I thought I would focus on it this weekend, I must have left on the mid speed setting. I turn the key it started working, I switched it to high. It stopped, I switched it back anf port from low to high. All I hear is click in the engine bay.

MelWff

I would look into an issue with the relay and it's associated circuits

https://willcoxcorvette.com/1978-198...i-blower-relay

newbie2vette

I saw that but the wiring is different from what I have. If that wiring diagram is for this. It is completely different. I ordered a relay today similar to what I have. It was cold A/C cut-off relay, the relay for the blower hi relay, the two terminal on the bottom were not side by side, they were one on top the other.
The photo is what mine looks like, this is what was posted by someelse in the forum.
It has the blue Red and the purple wires, the one on the link had a ground in place of the purple wire.

newbie2vette

I thought I would post the fix for my blower problem. I look for that relay in the photo I posted, what was turning up at the parts store is not what I have. What I have is called A/C Cut off relay, insalled the new relay now I have a blower with full range of speed.

Richard Daugird

Don't forget the little hose that supplies cool air to the motor.

newbie2vette

Thank you! I will check that tomorrow, I am sure that is one thing that gets overlooked.