E31 no power on windows,locks,wipers,mirrors

[Switches]

Good afternoon BMW family!! I bought a 1994 840ci 4.0 i just put the 2 new batteries but none of the windows, locks, mirrors , wipers ,seats, horn are working i was checking all the fuses and they r good but i notice that the fuse box in the left trunk doesent have any power not even with the key on please help !! Thank you in advance!

[TxGR8White]

General Module needs to have capacitors replaced.

[Timm]

I would agree - except there is no power to the Rear Power Distribution box, and that is supplied by the Fusible links on the RED positive cable of the right-hand battery: https://www.meeknet.co.uk/e31/Timms_...use_Finder.htm

[Switches]

Thank you but what do u think about what Timm said …. The back fuse box does not have any power or you think that is related to the GM to?

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Thank you Timm very helpful guide .. i will check into that because is very weird the back box without power ..

[TxGR8White]

Correct,
Check the fusible links. If your Gen Mod is still original, it will need caps - they all do at this age.

[Switches]

Ok perfect thank you guys! I only can work in the car on the weekends so i will keep you posted hope you have very productive week my friends !!

[Switches]

Hello guys quick update problem fixed!! It was the big fuse next to the right battery now i have power everywhere thanks!!

[Timm]

That's great news, and thanks for letting us know, it builds up the Forum knowledge!