Portable cd player and whine

[Autoeng]

I have a 92 Nissan pickup that I installed a SkyFi with no problems. The SkyFi uses the cd changer port of a Kenwood cassette deck. I decided to add an input splitter so that I could use my Sony Walkman to play cd's but I am getting ineffective ground whine from the cd player.

Here is how I'm set up. Aftermarket cig plug in the dash to a three way so that I can power the Skyfi, the cd player and always have a cell phone charger hooked up. With the Clarion that comes in Nissans there is no ground wire as it uses a direct stereo frame connection instead. Below the stereo I found 2 metal support brackets bolted together so I loosened the bolt, stripped back ½" of the Kenwood stereo ground, insterted this between the 2 brackets and retightened the bolt. Everything with the SkyFi and stereo is good. To make sure it was an ineffective ground I disconnected the AC power adapter to the cd player and let it run on batteries and then everything is good. I purchased a ground loop isolator and put it on the input from the SkyFi and cd player but had no effect. If I turn down the cd player volume all the way the whine is diminished but still noticable between songs.

I hope that someone can help me out on this. Attached is a jpg schematic of the setup.

Thanks,
Autoeng

[TBIRD 38 LX]

I am terrible with diagrams... but i can tell you this: Usually whine is caused by crossed wires. Like a power wire and the speaker wire for instance. Make sure all your wires are seperated from one another. Hope this helps. GOod luck.

[Autoeng]

Not that as the cd power wire doesn't come anywhere any others. Oh well, it's almost Christmas, guess I'll put a new deck on my list.

[Red Truck]

Hey there Autoeng,

Where in KY are you from?

I am also from KY...glad to see someone else from here...

[Autoeng]

Flemingsburg, KY. 1 hour northeast of Lexington.

[Autoeng]

Finally solved this problem. I bought an actual Sony brand AC car adapter. Much higher quality than the Radio Shack one and noise is history.