My Williams had been stalling on idle recently. Last two days it ran sweet then today I turned it on to give a mate a lift and the battery light started to flicker. When I put the main beams on it cut out dead and wouldnt turn over no central locking etc. The battery was new on Saturday (540 Amp Bosch) and fully charged. Am I going to have to spend the £150 at Nick Hill on a new alternator or could it be anything else such as engine earth lead problems? Where are the engine earth leads, I can see the one near the battery? Cheers for any help.