Blower switch will not operate?

Hello,

It sounds like you either have a bad blower switch or a faulty wiring.

First check the blower switch and make sure it is getting power. Also check for any carrion or burnt connectors.
It is a good change that the wiring for the switch could be shorted.

Here is a helpful article on checking wiring:

https://www.2carpros.com/articles/how-to-check-wiring

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.