I have four wires in factory wiring harness at antenna.
2 red & white
1 brown
1 blue
Hirschman Antenna has 6 wires
2 red & white
1 blue & white
1 brown
1 blue & green
1 blue & yellow
Is there any hope of getting these set up to work. 1991 Antenna was automatic with no inside switch. 1989 Mercedes 300se has a dash switch for Antenna adjustment. The Antenna is from a 1989 300se. I thought it would be simple but have been wrong so far.
The red & white wire with black tape is constantly is hot on the Factory wiring harness.
I am looking through the various wiring diagrams, and rather I... Do you have a blue car... LOL, I'll ask if yours has an amplifier or two in the system?
'Click & Clack [the Tappet Brothers]' usually asked the color of the caller's car if a bit stumped..... needing more infos....
I found these diagrams for the sound system [as of MY 1988 starting with 9/88 Production].
The next one is for MY 1991, so I surmise these ought to apply to your situation..
Here's hoping this will shed some light.
The 'always ON' Red/White goes to antenna & the trunk light. Blue is powered when the radio is powered ON and provides trigger for the antenna to rise & stay UP. Blue/Green & Blue/Yellow are from the antenna switch. *** Black powers the Amplifier, as you can see... Brown is the Ground supply.
*** As yours has no switch, then you can safely disregard these two.. Tape 'em off, whatever..]
In addition, BLUE & BLUE/WHITE speak the same language here..
In case the small print is too much, here are the same converted to .pdf .
Good luck man,
MBL
P.S. Thanks for putting up with my earlier silliness....
Thank you for posting this information. I was going a little crazy trying to figure out how the audio wiring was configured in my 89 560SEC, when trying to remove an aftermarket one and going back to stock
Those 2 diagrams fully explained it!
Thank you for the detail on the wiring. I have replaced one of the behind the back seat amps and the trunk amp/ tuner so I really was afraid of frying one of them.
I could still do so I guess. The learning curve on dealing with electronics is almost instantaneous along with expensive. lol
Thanks again so much for all the knowledge shared.
I will post a picture of how the wires had to be matched up to make the system function in the morning. Bypassing / Tying the antenna switch wires in at the Hirschman antenna plug was key to operation. At this point the Antenna tries to continue a little longer than it should. The Antenna should not cycle past he normal operation range.
At least the radio is functioning as it should.
Thanks everyone for the tips. Finally got it connected up properly. The reason it didn’t work when I first wired it in was because the fuse was blown (yes, I checked it before I got the replacement antenna).
I appreciate the advice!
Ron
Massauto
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