May 10, 2012 7:57:31 AM BST
depends if you are mounting spots to a rack it wont be earthed due to rubber mounts. if you are connect a earth wire from a suitable earth pooint on scooter to rack this will earth the whole rack power wires can be attached via a switch to battery or as elvis says wireing block, trouble with wiring block is that if you draw to much current you will melt wires on earlier scoots