Question about 1990 Mercedes-Benz 190
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Posted on Jan 02, 2017
Hello I'm a M.B. tech. As long as it is original there is no amplifier other than the head unit itself. The only tricky part is getting the antenna to work with the new head unit. Take a test light and find which wire is hot all the time. That will be your circuit 30 wire(radio memmory). Next turn key to position 2 and find your wire( one is for the antenna and the other is for your radio operation) and isolate those 2 wires,. Find your ground wire and those are your basic connections. There is a fader switch in your center console wood. the head unit sends its power ther and it is dispursed to the appropiate speakers(it is also a common problrm when you have no sound. Try to pop the switch up carefully with a flat blade screwdriver. If not pop up the shifter trim ring and pull up on the console wood. You may have to remove the ashtray. It is a fairly simple install hopefully my advice has been helpful.
Posted on May 29, 2009
Below is a link for your diagram. Best of luck!
Posted on Jun 18, 2009
Below is the diagram you requested. Please return to rate this solution. Thank you very much and thank you for using Fixya!
Posted on Sep 07, 2009
Testimonial: "thank you very much this was great help "
Check the underside of your hood for a belt diagram. If it's not there, call your dealer with your VIN number to get the correct diagram.
Posted on Sep 20, 2009
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