The blower motor on my '03 Elantra only works on high speed. I found a thread that described my exact symptoms and the fix was the blower motor resister. I believe it was Doohickie who posted pics of the part and the schematics, however I was not able to see them. I guess the post was too old and all that showed up were the dreaded red x.

Can someone post where this resister is located please?

 

Here you go:

 

Thank you. I will take a look.