Cadillac: NO HEAT, cadillac sedan deville, heater fan

Question
I HAVE A 78 CADILLAC SEDAN DEVILLE, AND MY HEATER FAN WILL NOT BLOW, I CHANGED MY BLOWER MOTOR BUT STILL NO BLOWIMG IS HAPPENNING. IS IT A FUSE, BECAUSE ALL CHECK OUT FINE.

Answer
On the very front of the passengers side cylinder head you will see a single wire, I believe it is green and it goes down into a well in the cylinder head this is the temperature turn on switch or the heater motor.

If it is NOT on there, Look on the drivers side of the engine block about half way down and half way back on the side you will see the green wire.

You can either replace the single spade terminal sensor or just ground out the wire on any metal surface.