I'd use that blacklight, for sure. I'm not quite sure where the evaporator is. A/C is one of the black magic voodoo items I won't mess with. That, tranny, and paint & body. nope nope nope. I sure do wish some of our resident experts were still around, that mysterious masked arrow would surely have you fixed in about 20 minutes and a couple of beers.
_________________________
WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires.
98 L36/MM5
RaC