I'm thinking of going with the opitronic driving lights, a 20w Phillips high efficiency bulb for regular riding, a beehive red LED in back and the Pocket Power 12 Volt DC, 6 amp hour, Portable Power Supply.

Questions:
1. Do I have to worry about grounding my lighting system if I use the Pocket Power battery pack? If I understand it right, I should just be able to plug everything into the cigarette lighter plug the pack comes with.

2. Is the 10amp fuse too big, too little, or just right for what I want to do?

3. Does anyone know the diameter of the front deraileur post on the F5 Enduro by Rans? Will it fit a handlebar stem?