Cd43 noise, hum ?

[chucker]

Hey its not all the time, but i sometimes get a whine for a few minutes then it goes away? I checked all grounds and DID completely rewire the car with oem wire from local BMW dealer boneyard. thks chuck

[M-technik-3]

Using OEM amp?

[chucker]

no, im using a couple of factory rebuilt cheap blaupunkts. i bought from midwest audio the blaupunkt dealer. chucker

[bmwman91]

So you are running all stock wiring from under the dash to the amps in the trunk (spliced in to the rear speaker wires presumably)?

Does the noise change pitch with engine speed?

Do the amps use both the + and - speaker wires as inputs?