OK, here is the situation. My 1980 300SD has a Becker "Mexico" radio with cassette. The cassette player does not work and the door for the cassette is broken, so it stays open. I would like to replace the unit with a newer Becker "Grand Prix" Model 754 from a '87 300D. I have had the "Mexico" radio out and it is hard wired, while the later "Grand Prix" model has plugs for the wires. Can someone help identify how to wire the later model radio into my '80 W116?

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• 2001 E320

bump

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• 2001 E320

I need the same question answered. Anyone done this?

Thanks

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1980 300SD Manganese Brown Metallic Clearcoat 248k
1979 300SD White 148 k
1984 300D Silver project car for daughter
1982 300D wrecked
1980 300SD 310K not running

Here's a diagram of the power connector for the Grand Prix... There are a few other connectors on the back, but I don't have a diagram for those. The circular one is for the antenna cable, there's two side-by-side for the L and R channels, there's one near the top (I believe) all by itself - that's for the anti-theft feature - and another rectangular one, but I can't remember what it's for.

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