Bought a second-hand 600G earlier this year - very pleased with it. Fuel consumption could be better, but acceptable at about 24mpg around 58-60mph. Only problem is that the leisure battery isn't charging while driving, and the fridge won't run off the leisure battery (I assume part of the same problem). The battery charges up fine from the mains. There must be a relay somewhere between the engine battery and leisure battery but I can't find it - any ideas ? Thanks.