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Premium Member
1989 300SE, 1989 560 SEL and 1985 280SE Euro
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Discussion Starter #1
At the antenna side I need to splice in a cable end. The current one is somewhat malformed and will not correctly install in the antenna. (Thank you Malcolm for the suggestion to look here!!)

Question: what is the appropriate method to splice a coax antenna cable?
 

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Outstanding Contributor
350SDL, '17 GLS450, "Grandpa's Roadster" Project Car
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3,081 Posts
Do you mean you want to extend the length of the wire, (not recommended) or are you just installing a connector on the end of the existing wire? (Solder it on.)
 

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Premium Member
1989 300SE, 1989 560 SEL and 1985 280SE Euro
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378 Posts
Discussion Starter #3
Do you mean you want to extend the length of the wire, (not recommended) or are you just installing a connector on the end of the existing wire? (Solder it on.)
Not looking to extend the cable per se, need to replace the antenna end of the cable so that I can reattach. The screw on end of the existing cable is damaged, I have a whole cable but do not want to run a cable from the radio back to the antenna, just want to graft on a new connector. Is this coax similar to RG type coax? Solid center copper wire with a braided cover ?
 

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350SDL, '17 GLS450, "Grandpa's Roadster" Project Car
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I recall the center conductor is stranded. The impedence of the cable is dependent on the diameter and composition of the insulation between the center conductor and the shield. Hard to duplicate if you're splicing. Better to just cut the old connector off and install the new one.
 

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1989 300SE, 1989 560 SEL and 1985 280SE Euro
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Discussion Starter #5
I recall the center conductor is stranded. The impedence of the cable is dependent on the diameter and composition of the insulation between the center conductor and the shield. Hard to duplicate if you're splicing. Better to just cut the old connector off and install the new one.
Maybe I’ll just run the 14’ cable and know it’s solid and not attempt splicing. I don’t know how to change just the connector, I have a whole cable set from Hirshmann
 

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1989 560 SEC - V-8 Kompressor - 95 E320 Estate
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It is a big project to properly run the cable from the radio to the trunk. If your not comfortable with attaching a connector to the end (about a 10 minute job) maybe seek a local quality car stereo installer that can crimp the connector to your existing wire. Not rocket science. Good luck. Mike
 

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1989 300SE, 1989 560 SEL and 1985 280SE Euro
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378 Posts
Discussion Starter #8
Put up a picture i can think of two types of cables that mb use .
Would love to crimp and or solder and agree that neither is rocket science...
Who sells just the end that screws onto the antenna ??
 

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1989 300SE, 1989 560 SEL and 1985 280SE Euro
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Discussion Starter #9
Would love to crimp and or solder and agree that neither is rocket science...
Who sells just the end that screws onto the antenna ??
Threaded end as shown below
 

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Moderator
1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
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1996 S500, 1982 500SEC, 1991 560SEL
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Sorry,not exactly pertaining to the original poster's question but I have a question about the antenna coax cable in general.

I've just put in a new headunit into my 560SEL with the complicated dual rear-amp setup. I didn't see an antenna hook-up behind the center console as there was no antenna attached to the original head unit I believe.

Where does the antenna cable lead to in the 560SEL? I suspect there is a separate "antenna" tuning unit that is not part of the original head unit. I need to find it and connect it to my new headunit to get signal.

Thanks
 

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1991 500SEC sub 50K mi. 1987 560SEC Now 150K mi. 2018
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4,191 Posts
Veriticus,

I too, would expect an antenna coax cable there.

My '87 SEC had one plugged into the Becker when I removed all that for a repair..

The schematic shows one for my '91 SEC.. and they both work.

MBL
 
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