Ok, I have a 147 2.0 on a 53 plate. Lusso trim so its heated seats, climate control etc. I bought it back in january, no problems, last month I started getting fairly random VDC and ABS errors which were gradually getting worse so I changed the battery (original one was still in). Now I'm getting a far worse problem, if I try to start the car with any electrical items on (radio, air con, lights) it won't start and if I select reverse with anything on it kills the electrics and stalls the engine.
I'm going to have a look tomorrow when the weather drys up to make sure nothing has come loose since I changed the battery and that the earth connections are in good nick. The local motorfactor sorted me out with a heavy duty battery when I got it, 600amp cold crank so that shouldnt really be the problem. Any ideas or suggestions about what else it could be?