I got this car (w124: 1991 300E) about a year back, around the same time my uncle decided to give me some stereo equipment from a BMW his sister had totaled. I want to put it in but I don't have any idea where to start! My experience working on my Benz is 0 (unless you count a carwash), but I gotta start somewhere!

Any help would be appreciated.

Equipment List:

Rear Speakers: Two 5 1/4" Pioneer Premier TS-A530P
Sub: MTX Audio Thunder 4500
Amp: Alpine V-Power MRP-F240
Radio/CD player: Alpine (?)
Deck: Alpine

If pictures are needed, I'll send those later.

Does your car have the 4 piece stereo? (HU, two amps, and a tuner computer behind the rear seat)

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

id start w rear speakers, the plastic "cups" that hold the old MB speakers wont fit a 5 1/4 but if you cut the 'lip" off you can silicon glue the new speaker in and solder the wires EZ

Thanks for the pic, jha. I'll see if I can't put that in tomorrow morning.

As for the four piece, I dunno. I found out how to remove the seat cushion, but I'm not sure how to get the seat backs off. I think there's a bolt holding it on there. Also, I'm not sure what an HU is. If I end up figuring out how to undo the seat, I'll post a picture of what's under there.

Thanks

HU is the head unit, aka the stereo itself. In my 87 the factory set up is Becker head unit with direct power to four coax speakers. Later 124s had the Becker HU with two amps in the trunk powering six (I think) speakers.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)

u push the red clips under front of back seat, in and pull it up and out , 3 10mm bolts hold the rear seat on, both sides and one in center under seat belts

^ like guy above said, the fader gives you 2 sets of speaker outs, most HU have 4 FR FL RR RL benz is weird.

fader also sounds like crap, and mine only goes forward not back, id just rewire it like i did, u need literally 3 feet of wire and minimal disassembly.


PS the fronts actually easier to DE fader than rear, wires r right in radio hole just yank em out! both green/black w white euro plugs