No power going to front blower motor or resistor

Hi,

Power is sent to the resister via fuses and a relay. A ground path is provided by the switch which causes power to flow through different parts of the relay. So, from the switch, there isn't going to be power.

Since the fan runs when you jump it at the relay, we know power is available but isn't being sent when needed.

On a relay, there are basically two circuits, a primary and a secondary. First, there has to be power sent to the primary side which energizes an electromagnet causing the secondary side (which is like a switch) to close and send power to the resister.

Since we know the secondary side has power (paper clip) then suspect the primary side is either not getting a signal/power or there is no ground path being provided at the switch.

So here is what I need you to do. At the relay, locate the red wire with a white tracer. That wire should have continuity to ground when the switch is on at any speed. Conform that. If you do have a ground path, then I need you to check the red wire with a yellow tracer for power which should be present at all times once the key is in the on position.

I attached the wiring schematic below and highlighted the wires in question. Also, here is a link that explains how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Do this and let me know the results.

Take care,

Joe

See pics below. Note: I had to cut the schematic in half to make it readable. I did overlap the two so you can follow from one to the next.