The genuine regulator from 69 suddenly wasn't working right, it went until 18 or 19 and on the way to go electricity satured and the engine shut off but still have sparks on spark plugs. Wait 5 minutes and the engine started again but couldn't go more than 6500.
Found a used one in Alsace, worked perfectly during 300 kilometers then the engine shut on the way back but no more sparks.
Ordered a regulator and rectifier at Rex electric in UK and will be ordered a A B unit box at Rick's electric in USA.
WS Churchill "You were given the choice between war and dishonor. You chose dishonor, and you will have war"