Finding wiring problem - help?

[Myka]

So, I've been avoiding taking my ATI fixture apart because I don't know how to use the multi-meter for this purpose, and I'm scared of electrocuting myself (which I've done numerous times in my life).

So, here's the dealyo...I checked the fans on a 9V battery and the fans work. I've fiddled with the connectors and can't get the fans to operate in the fixture. So now I have to figure out if the connectors are faulty, if there's a wire loose, or if it's within the control unit of the fixture.

So if I stick each end of the multi-meter in each connector (with fans in operating mode), which setting should I be on, and what am I looking for? I also have a test light if that will do me any good.

I have this one: