low fan switch?

[0-60n4]

My low speed fan will not come on. I switch the two relays and no change. I purchased the Caspers manual fan switch. It runs the high speed but still not low speed. What next?

 

[salvageV6]

Check the wiring to the big fat resistor near the fan motor.

Car off when inspecting the wires and fan delay relay disconnected so it doesn't start unexpectedly if the car goes over 220 or so degrees even when off.

You can try grounding the green or green/yellow stripe thinner wire on the relay to see if it runs on low speed.

 

[0-60n4]

Got it. It was the electrical connector just before the fan. The connector for the low speed wire was not making a good connection. One more bug killed.

Thanks for your help.

Jim