2004 Grand Marquis not blowing air
I replaced the blower motor in my 2004 Grand Marquis after the air stopped blowing. This did not fix so I had the shop replace the resistor. The air worked for about a week then stopped blowing again. The shop then replaced the resistor again but this time it did not work at all. They tried to trace the wires but ultimately decided to refer me to the dealer after they could not figure out the issue. I don't what to go that route. What else could be the issue?