how to install the blower motor?

Here is a video that will help with this as well as a guide:

https://youtu.be/1eau7hCuuJ8

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Below you will find the specific instructions on how to do this for your vehicle as it appears you need to remove the dash to do this.

Please let us know if you have questions. Thanks

I added a guide for testing the relay for you.

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

Please let us know how you make out.

Roy