Are you checking when the vehicle isn't in the ACC/ON position? The lighter doesn't work unless the key is present, same with the power plug inside the console.
Take a voltmeter outside and check for 12V in the lighter. If not, pull the center tunnel apart and check the leads to the lighter and see if they supply 12VDC. If that's still a no, make sure the fuse terminals supply it. Trace your wiring, then come back and let us know what you find.
If you don't own a volt meter, a simple one from Sears will work fine for under $40, just make sure it measures to mV, and it will be useful for many applications. My personal choice if you're going all out would be a Fluke 87.