FYI: Your LEDs will begin flickering eventually because of overvoltage problems in our vehicle (the wiring was never set up to provide the extremely stable voltage you need to keep LEDs from getting damaged). So, while you're back there installing a load equalizer you're going to want to install one of these:

http://theledlight.com/rg12regulator.html

Install all of it in this order:
1 Battery
2 Load equalizer
3 Regulator
4 LED License Plate Lamps

Just remember that if you ever go back to incandescent lamps back there you'll need to remove the regulator first.