Hey guys quick radio question
 

I have bought and am about to install an RF noise reduction filter on my 99 c280 with bose system. I am supposed to splice into the positive or power wire and into the negative or ground. I assume these wires are red and black, but I am not sure. Does anybody know what color wires I should look for.
Thanks for your help.
FA

RE: Hey guys quick radio question
 

No on my 99 C280 brown is ground

RE: Hey guys quick radio question
 

one down, one to go. Hope somone can help me. Thanks

RE: Hey guys quick radio question
 

this RF noise reduction filter, is it being attached to the radio or the alternatior?

RE: Hey guys quick radio question
 

am also about to ask same question.

the noise supressor i know is connected in series to the power supply of the radio.

am not sure what fay3131 got.

RE: Hey guys quick radio question
 

Yes the filter is spliced into the power wire running into the back of the radio. The power wire is red and blue, and the ground wire is brown. I acted like a mechanic and called the local MB dealer and they looked it up for me. The filter seemed to reduce but not solve the problem. This absolutely driving me crazy. I hear what you said about the diode Sleepwalker, but I don't know what machine you are talking about, and I have no clue what a diode is. Could you please elaborate a little. Also can you replace an individual diode or do you have to replace the whole alternator? Thanks so much for your help.

RE: Hey guys quick radio question
 

Why not replace the entire head unit?

RE: Hey guys quick radio question
 

THE ALTERNATOR DIODE CANNOT BE REPLACED.

was there a noise too when the ignition is only "on" and the engine not running?