[Srubydo1986]

juice from the batter runs down to the starter from there is goes to a fuse block on the fire wall i think the juice from there runs power to most everything like us alot of juice so if one of those things are loose not enough power is brought or youll get an arking effect.

Hope that halps on the light question if that doesnt help the lights check the swith it maybe loose or going bad.