Originally Posted by bigaudiofanat

Stuff like led's and neon tubes are not going to be a large draw, I use to have a under glow kit on my civic years ago that I would leave on for hours with no problems. I agree with Zak, There are many places and ways to grab power for constant. A relay setup is recommended.

Run a fused wire from the battery through the firewall to your led's. That would be the simplest way to do it.