How well can you feel the air blow out the duck on low speed? On high speed? Check another vehicle with same test. If you’re not getting air speed check all doors, vents and outside vent for obstructions. Take resister out and hook to 12 volts, watch it glow hot then blow over it with the air hose, it cools down and stops glowing.

Last edited by cudaman1969; 12/11/21 03:10 PM.