2005 S500 Antenna Connection
Working on a 2005 S500 that I can't find where the radio antenna wire runs to. I have pulled the radio and only have the fiber optic and 2 wires. I have looked at the antenna and followed the run down the pillar but lost it after that. I have looked at any "antenna" location and coming up with nothing that works. All this work for a SirusXM addon
Thanks in advance
Sorry about the 20 questions, we do not work on many Mercedes let alone have one where we didn't have the antenna connection at the radio.
A2/12x1 Rear window antenna amplifier module connector cable colors:
1 gr/ge
2 bl
3 rt/ge
4
5
6 br
A2/12 amplifier module is under the headliner at the rear glass (rear upper header).
Device A2/13 sound amplifier is also in the system, located in the trunk near N93/1 audio gateway control unit.
The radio A2 appears to be on CAN via lines M1 and M5.
maybe you can find help here. Cable harnesses and components.
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I have installed couple recent-model double DIN sound systems, purchased from Crutchfield, in cars from the early 2000s. The technical support information from Crutchfield for American and Japanese vehicles is quite good. Looking at Crutchfield's site, the 2005 S-Class seems to be out of their league.
Read this to learn about the COMAND generations. The 2005 S-Class appears to use COMAND 2.0 with MOST. https://en.wikipedia.org/wiki/Comand...OMAND_2.0_MOPF
Scrub forward to 5:33 in this video and there is discussion about the 2003-2006 using MOST protocol with fiber optics.
Scrub forward to 11:15 in this video and he describes the wiring connections, and COMAND 2.0.
Have you seen this video?
What sound system are you installing in this S-Class?
Last edited by chassis; Dec 29, 2019 at 11:44 AM.
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bamberger_1, you are probably right. Do you agree there is no difference in FM radio antenna implementation between COMAND 2.0 and later NGT systems? In other words, via fiber optic over CAN?
VIN: WDBNG83J85A451228
Yes, I have used that video on another Mercedes that were were doing that exact same radio.
I'll read up on the COMMAND stuff and see what I can find out
Antenna function is via CAN to the best that I can tell.
Last edited by chassis; Dec 30, 2019 at 10:29 PM.
Last edited by bamberger_1; Dec 31, 2019 at 01:53 PM.
A2/12x1 Rear window antenna amplifier module connector cable colors:
1 gr/ge
2 bl
3 rt/ge
4
5
6 br
A2/12 amplifier module is under the headliner at the rear glass (rear upper header).
Device A2/13 sound amplifier is also in the system, located in the trunk near N93/1 audio gateway control unit.
The radio A2 appears to be on CAN via lines M1 and M5.
Gray/yellow
Blue
Red/Yellow
This is just looking and not having the plug out.
Also, there is 2 coax connection (one big and one smaller)
gr/ge=grau/gelb=gray/yellow
bl=blau=blue
rt/ge=rot/gelb=red/yellow
remove the combined navigation and cd changer units, you will see the amp and AGW. there are 2 antennas going into the AGW. The one closer to the floor and black in color is FM.
Ok?







