Hey G2K....
They are called T-Taps and are made by 3M.
I have some if you need a couple, I will be at Toyota of Plano tomorrow night @ 6:00 PM, if that is a good meeting spot?
You can also buy them at Fry's Electronics, they are with all the other 12v connectors, but they are often out of stock. Those monkeys never keep the shelves full.
Also, here is where I order them from in bulk:
http://www.dlcparts.com
The automotive electronics installer's paradise.....