[AKnowles]

Actually, if I remember my frustration properly when testing my retrofit the lights dip when the ignition is turned on and not the light switch. So as a self-tester you can follow this procedure to check them:

A) The ignition is turned off and lights are turned off.
B) Turn the lights switch to the On position.
C) Turn the ignition switch tot eh On position.

And you should see the lights dip. If you don't, then check to make sure your lights are fully plugged in the recepticle at the back of the lights. One of mine would not dip fully and I traced it back to a poor connection.