Well,
have you ever tried to connect a "second car" directly to your battery ?
Especially to some of the new Fords ?

Well, if you can spare the 2000$ for the new parts (loads of melted cables) you can give them directly to me ...

Always ground as far away from the battery as possible.
Modern cars have very "strange" electrics ...

btw:
When I picked up my car, my dealer mentioned that he fixed 9 cars already this year because of this problem.

anti


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MKII 08000073 12GB BLUE