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Old 02-14-2017, 08:16 PM
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Join Date: Feb 2017
Location: SE Michigan
Posts: 311
92 mercedes 300d radio wiring

So I plan on swapping to a modern single din head unit on the new to me mercedes. The current radio is slow to turn on and occasionally turns off, i also notice my antenna stays down. Is there a seperate antenna switch somewhere. With the quaility of the reception I'm guessing a connection is broken somewhere. Also is there a specific wiring harness for this car or will i need to cut into the factory harness? If so, i'm looking for the pinouts.
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Old 02-15-2017, 07:56 AM
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Join Date: Aug 2011
Location: Carolina
Posts: 1,376
It's a becker 1432 if you didn't know that already. Start there to find that it's a fairly complicated system. If there is an easy way to plug and play a new head unit into the system I couldn't find it.

I just went through this on my 92. New 4X45w head pushing the dash speakers and the door speakers through new speaker Wire from the head. New 300 W amp in the trunk pushing the two new 5 1/2 inch speakers in the back. New Cheapo surface mount antenna from Amazon stuck to the outside of the windshield

Works well. I'm happy.
Current fleet
1992 300D "IceBerg"
1984 300D "Blues Mobile"

1978 300CD "El Toro" Gone on to be born again
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Old 02-15-2017, 11:57 AM
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Join Date: Feb 2017
Location: SE Michigan
Posts: 311
gotcha, how did you run the surface antenna? Firewall and out by the hood? Also how many speakers are factory? 6?
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