I have the musty smell in my AC and according to the threads on the subject I may have a clogged drain line. Trouble is, I can't locate it. I assume it would be on the passenger side under the hood near the firewall of 2007? I run the AC for several minutes hoping to see one drip so I can trace it back to the drain but I can't get the AC to produce a single drop............

Hello, I believe there are 2 drain tubes. Not exactly sure where the front one is located but there is also one right by the exhaust pipe towards the rear. Hope this helps a little.

Wow, I was not aware of the one in the rear. I am only guessing here, if the musty odor is coming from the front vents when the AC is on that the drain is restricted or blocked. I guess it wouldn't hurt to find the rear one and make sure it's clean as well.

Thanks