Does anyone know what this connector is for? The cap has two pins on it that are electrically connected.

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On my Becker Europa 2, it's an auxiliary DIN socket. This is where I plug in an ipod cable that I made. I'm guessing it's the same.

Not being familiar with DIN, how did you wire yours? I'll give it a shot.

On the 612 that connector is for the Becker auxiliary CB radio model 435F. It has only two pins and it won't help you with an auxiliary audio input.

The earlier Becker pinstripe radios like the Europa stereo used a similar din connector for an auxiliary cassette deck. Stereo radios have 4 pins (L+R output and L+R input). Mono early Europa radios have 2 pins (output and input). These signals are line level audio.

The pins in the cap bridge the socket to connect the input and output when an accessory is not used.

__________________
1969 220D 5 Speed (OM616)
1983 240D 4 Speed
1985 300D Auto 376K
1985 300D Auto 275K

Thanks, thats exactly the kind of answer I was looking for.

You're welcome. I have a PDF service manual for your radio. Let me know if you need it.

__________________
1969 220D 5 Speed (OM616)
1983 240D 4 Speed
1985 300D Auto 376K
1985 300D Auto 275K

At this point, I think I'm going aftermarket. I'm planning a Wichita Seattle trip next year in it, and frankly I'm spoiled by SiriusXM. The option of having Becker put an aux input that only works with a cassette tape in is unattractive to say the least. I have a cassette tape aux input, and the radio won't keep it in, so apparently there's something wrong with the tape player anyway. I'm not an audiophile by any means, but there's a lot of capability out there for less than $200.