Tweeter re-wiring

[NJTSX]

Okay i have just about everything sorted out for my car audio/video installation in about a week, except for the rewiring of the tweeters. I have an aftermarket amp that is mounted in my trunk already, and i was planning on running new speaker wire to the actual tweeters, but i was wondering if this means i will have to remove parts of the dash? I have already popped the tweeters up and removed them, and i know i could easily replace them, however, how do they get power from the aftermarket amp in the trunk if i don't rewire them with new speaker wire? is there a way to "snake" the wire so that i don't have to remove the glove box/etc and basically tear about the dash? (tie new wire to old wire, pull old wire which feeds the new wire through) If there are any pictures or DIY's on this topic somewhere else, i'd really appreciate if i could be redirected.

BTW i plan on doing a write up of my installation that includes
Orion 4 channel amp
Hifonics mono amp
RE audio SX 12"
Boss DVD player
USA spec ipod hook up
Big 3? (not positive yet)

Thanks for all the help and hopefully the installation runs smoothly on the days that i have it planned.