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420sel radio wiring diagram

3912 Views 1 Reply 2 Participants Last post by  robbpa
my 420sel has had the radio wiring harness cut, and i believe it has the Becker grand Prix system. if someone could pm me a wiring diagram or just tell me what the different colors go to it would be appreciated.
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Go to the service manual sticky and follow the directions till you get to your model and year and click the "Electrical Troubleshooting" tab. Then select the "How To Use" tab and go down to page 5. There is a useful wire color coding chart, copy it for future use. Then go to the "Circuit Diagram Index" and select your radio.

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