humming when using a Line Out Converter

Most LOC's are electronic devices that need power and ground hooked up to work proerly. Some electronic LOC's have a third brown wire that is to be grounded if noise is present. Get the LOC hooked up properly first and retest. Does this hum go away when the rca's are unplugged?

jc18750, thanks for your attempt at help, unfortunately it is a little misguided. This is more than likely a belief in a possible problem but infact it is far from the truth. Perhaps someone told you about this or you read it somewhere else, noneless it is incorrect and we don't want to send people down the wrong path.  Stick around and ask questions and learn from the members of this site, most will be more than willing to help you out.

I had this problem the other day in a car i did, lincoln ls, basiclly what causes this hum is, you are using a swithed power source instead of the remote turn on, I bet the car u are putting this in has a factory amp. if the factory deck has a true turn on use that instead of the switched accessory, if the turn on is weak u may need a relay, if not turn down the levels on the hi-level converter, this sometimes fixes it, if still nothing, try reversing the polarity speaker wires, still no luck, make sure the brown wires are not accidently touching ground when u put all the stuff behind that dash. anyhow thats my 2 cents.

Eric.