Reversal of battery terminals ie make positive earth instead of -ve?

If you reversed the battery terminals, yes the positive would be considered earth ground in all technical aspects.

The 12 volt system in a vehicle is not designed to work that way though. If you reverse the battery terminals you will fry every computer and module in the vehicle.

Reversal of battery terminals ie make positive earth instead of -ve?microsoft

Bad idea.

Reversal of battery terminals ie make positive earth instead of -ve?microsoft access internet explorer

No point in me saying

anything, the radio installer

said it all..

many years ago cars were

positive earth, but not now.
Your radio will not work unless it was made over 30 years ago.
Back when cars had dynamo for electrics and only lights and ignition you could do this in order to fit a radio with the "wrong" polarity. Now everything is transistorised, and any attempt to reverse the polarity will blow the lot. Try it, but expect a bill of at least 锟?,000 just for the new parts
you cant do this with a modern engine.as you would blow all electrics. ive a 50s rover and this can be done.as it has a dynamo and +ve -ve swich on the radio and no modern gizmos ....
hi there, the only way you can fit radio with pos earth to car with neg earth is to isolate it rubber mount the radio so that none of the metal of radio touches car metal. aerial has to be one that does not fit to car metal say the ones you can fit on your window if you do it that way then you can run supply wires straight from battery it is a tricky op and time consuming but can be done with care jock