Hi I know the location of the fuses but cannot find the info to tell me which are accessory and which are permanent, the ones I am most interested in are the left of the dash (passenger RHD). If anyone can help it will save me a lot of time.

There are few if any fuse positions reserved for use with aftermarket add ons or user modifications. When there are, it’s for a Mercedes retrofit, for example trailer hitch.

There’s supposed to be a fuse list in your trunk tool kit. If missing, see dealer to order one. I just did and it’s $1.68.

I have the fuse list but it doesn’t detail if the supply to the fuse location is permanent or accessory, I have fuse taps to do the job but need one permanent and one accessory ( as I understand Mercedes system only monitors “important” circuits and the draw I am adding will be sub 1a

Is this the correct translation of your words?

permanent means always hot

accessory means switched by ignition switch

Yeah that’s what I mean