Plans today scuppered when I found that the rear indicators are coming on with the brake lights. I have already had the rear lenses replaced due to condensation but it has started again in two of the lamps. Most things point towards a dodgy earth but I can't help thinking that it has something to do with the moisture and a short circuit. All the rear lights can be traced to the front cab with no multi plug connectors or earthing straps visible. I'd love to fix it myself but looking like a visit to the dealers or maybe Fiat. Any advice appreciated.