DMM = digital multi-meter. If you're comfortable messing with wiring & troubleshooting, you can deal with it. But if you don't know what a DMM is, well....
That clicking noise would be the solenoid unlocking the shift lever, or trying to unlock it. You'll have to take apart the consile trim stuff to get at it. Since it clicks, then I suppose the switch at the brake pedal is OK, along with the wiring. Maybe the solenoid isn't working right, or the latch mechanism is stuck somehow? Mine hasn't screwed up, so that's about as much as I can tell you.