My ac quite working. Clutch not engaging.  Checked for a code. None found. Checked continuity through hi pressure switch and clutch circuit. OK  Checked clutch physically with  external  12 volts. Clutch engaged. Any suggestions??  Where can I find a schematic of the ac circuit?

Genos does sell a filter that mounts over the intake grill in front of the windshield.

http://www.genosgarage.com/CAB-FRESH-INTERIOR-AIR-FILTER-KIT-94-02/productinfo/CFF-DG-0610K/#.VU9V17B0yUk

I've seen a few those. Not really a good filter at all. Does not do much for dust.

Never saw one on a 2nd gen but the one I added to my 2010 works awesome, last time I changed it had about 5 lbs of dirt in it and was filled level full with the pleats., literally dumped the dirt out of it when I pulled it out, will need to change it more than once a year I guess, thats a lot of dirt that was not on my dash or plugging up the heater core or evaporator.

24V are not paper pleats. They are like a fiber / weave material very loose. Kind like this bit thin and loose weave.