I'm a decent Shade Tree Mechanic, but just getting started on the electrical concepts side...

I want to test the used blower regulator that I just got before I tear iinto the car to install it. This part has a 6 month warranty, but I want to make sure it works beforehand.

Is there a test for it while before installantion?

Thanx

__________________
03 CLK430 Cabrio 211K Pweter Silver/ Oyster Leather
90 300SEL 214k Pearl Black/ Alto Grey/Black Leather

Prior: 85 190E, 88 300TE, 89 300TE, 90 300E 2.6, 90 300TE, 92 300E 2.6, 91 and 93 300SL, 87 Ferrari Mondial Cabrio