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  #1  
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.
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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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