In article . com,
Weatherlawyer says...

cmackay wrote:
Does anyone have a wiring diagram for converting an old tractor wiring
system from 6v (dynamo) to 12v (alternator)?

Boy, are you in the wrong forum.

Is he hell. It's something commonly done to classic cars, especially
Morris Minors.

IIR anything, the positive becomes
negative to start with and then you have a big deal with the earth
wires.

No you don't. You don't understand electrics at all do you?

--
Conor,

Same ****, different day.