This doesn't make electrical sense.

[flatheadfan]

If you have your entire car original (6 volt positive ground) and wish to run an accessory such as a modern radio (12v, negative ground), you need a converter. I have used these in several cars over the years without ever experiencing a failure. This is where the puzzle comes in.

Since the radio is grounded to the cars' chassis it would seem that you would have a negative ground and a positive ground conflicting with each other which would lead to all types of gruesome possibilities. But, it doesn't happen. I need some help on this to understand it!

Thanks

Tom