i posted in the tech section but didnt get any help so ill try it here


I recently have done the ipod integration where you splice the iphone wire to the cd player and play a silent cd. when the audio wire is plugged in, it sounds crystal clear.

however, when I plug in the charger and the audio wire, i get terrible engine noise coming through the speakers, even when i have the radio on fm instead of CD.

does anyone know what is causing this and/or how to resolve this issue?

thanks in advance

 

three words: ground loop isolator

 

Yep. Your iPhone charging loop is poorly grounded/shielded and thereby conveying the RF transients to the audio system (high voltage ignition spark is the usual RF noise culprit).

Ground loop isolate the circuit [ultimately best to the battery negative terminal]. http://www.radioshack.com/product/in...ductId=2062214

 

wow you two should check out the tech forum more often lol. thanks for the solution
another question though; i dont have any rca inputs to connect that to. i have a 3.5 mm to rca wire that i cut to solder to the cd player pins in the back of the stock radio.

so what would i have to do to make this work with this setup?

again thanks for the prompt responses

 

they make ground loop isolators that work with 3.5 mm plugs.

 

lol simple enough. pardon my ignorance and thanks again for your help

 

Yep
Isolate the ground and all will be fine.
Common problem with a simple fix

 

went to radioshack and bought myself a ground loop isolators and a few adapters and viola, no more noise. thanks everyone :thumbsup:

 

good deal glad to be of assistance