How could a vehicle have a positive earth (when it is not supposed to) yet still start and operate completely normal? I was trying to troubleshoot some electronics in a vehicle when I noticed if I took off the power cable the thing still stayed on. It was only when I disconnected the ground that it turned off. I have heard that the Russians used to do this on a lot of their military vehicles (and even some older American cars) but I would think that a vehicle that wasn't designed for this would have some major problems. I'm no mechanic though. As you can see from the picture there are more problems than just the positive ground (I really have no idea how this thing even starts, but hey......"Afghans". Check out that nice little hole in the battery on the left.....and this was after I sent it away the first time and told them they needed to have a mechanic address the vehicle's electrical issues (and yes, this is a MAJOR improvement from the last time they brought it to me ).
What vehicle is it, sounds as if it's been reverse engineered. This attachment may throw some light on the reason. http://www.spritespot.com/Downloads/Positive to Negative Ground Conversion.pdf
I would have thought that with all the electronics it would have a negative earth. Diesel once started only need compression.
Well that's the thing, they are supposed to have a negative ground (and all their other vehicles did have that).
