Date registered: Aug 2012
Vehicle: 1976 450SL and 1970 250C, four speed (both sold) 1990 190E restoration project.
Location: Lakefield, Ontario
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Quoted: 14 Post(s)
I have installed the four new speakers. (4 ohm) And I’m now ready to try to install the new (to me) radio I got.
There are a total of 9 wires coming out of the existing M-B radio as noted below:
(I tried to put this in chart form but the spreadsheet software I use is not recognized for dragging/dropping in this forum)
1. White female connector- 2 wires, white & white/black that go to a black wire and a red/black
2. Black female connector- 2 wires, black & black/white that go to a black wire and a green/black
3. 4 prong connector brown wire that goes to brown wire
4. 4 prong connector red with fuse holder that goes to 2 black/yellow/green wires
5. 4 prong connector gray wire that goes to a blue with white strip wire
6. 4 prong connector white wire that goes to a red wire
7. yellow wire that goes to a blue wire
From what I can see on the Electronics Manual (124/2) on the car side, the red/black (1)and green/ black (2) wires go to the fader, the brown wire (3) is ground, the black/yellow/green (4) is hot with key on, the blue with white strip (5) is console illumination, the red wire (6) is hot at all times, the blue wire (7) goes to the antenna.
So I’d appreciate it if someone more knowledgeable than myself could let me know if they agree with what I see as the purpose for each wire. And also advise of the purpose of the solid white wire (1) and the solid black wire (2)
Secondly the new radio I’m looking to install has a total of 8 wires for the speakers. Positive and negative for left front, right front, right rear and left rear.
I think I can figure out the other wires but how would I connect the 8 speaker wires from the new radio to the vehicle?