coopoli

Good morning

I recently bought an C220 2012 VIN: WDD2042021F724397
Link to car.info: https://www.car.info/en-se/vin/S/WDD2042021F724397

When i bought the car i knew there was something wrong with the radio reception. After some searches i decided to buy used amplifiers for replacement. When i removed the trims on the tailgate, i realised that the tailgate is not the same as original(connections and the rear window antenna connectors are different)
And, when i look in the fuse compartment on the right side in the trunk, there is a cable connector that looks similar to the one that connects to an amplifier(the round one with one cable)

The car has probably been crashed and repaired by some amateur who installed wrong tailgate and did not manage to solve the amp situation.

So, my question is

1. Can someone help me understand how everything should be connected?
2. Can someone help me to find the correct wiring diagram for the antenna/amplifier connections?
3. Should there be any other "amp part" in the right handed fuse compartment?
4. Could there be a fuse that interrupt the reception?

Thanks a lot!

Here's some pictures of the current situation

JettaRed

iTrader: (1)

You really need a copy of the WIS (Mercedes electronic workshop manual). You can get copies that run on a Virtual Machine (VM) on eBay for about $30 USD. You want the WIS and EPC combination.

coopoli

Interesting! Could you point me in the right direction of what exactly i need?

JettaRed

iTrader: (1)

Something like this: https://www.ebay.com/itm/38371007103...mis&media=COPY

I am not endorsing this seller. Just search on "Mercedes WIS" on eBay to see all the offerings.

Don't get tricked into a 1-month subscription. You may also be able to find downloadable copies, but be forewarned, the files are huge. Getting it on a CD/DVD or USB stick would be easier.

ALTERNATIVELY, you may want to consider a lifetime membership with @BenzNinja in which you get WIS, EPC (parts catalog), XENTRY (scanning and diagnostic software), and more.