I've seen some of these suggestions in my Googling.
Where would your run an additional earth strap from/to ? (I'm used to conventional monocoque constructions and he tells me it's an alloy body). I'm afraid electrics are not my strong point.
The battery negative strap looks a bit feeble and the point it connects to the chassis is a bit corroded. I'm not sure the chassis connection would survive any attempt to undo it.
