Elektrik: zwei Batterien im 750i - Fragen

[Sinclair]

to RS744: interesting ! I have not recognized so far, that two plus poles are available in the engine compartment of the 750i.

to Antii:
if the two plus poles can be found, you have simpler wiring, using my proposal before, you need only access at the engine site, but I still recommend to use the two resistors for slight decoupling the simultaneous charging processes for both batteries from one CTEK charger.