Hmmm, that's interesting, but I don't think it's the same as my problem. I tested the cables by swapping them, it always plays thru the right channel only. The cord tests fine for continuity, so I'm thinking my white RCA plug has a bad connection to the sled. Does this sound reasonable? How easy/hard is it to fix the sled connections?

As for grounding the shields, the Sirius is drawing power from the cigarette lighter, would grounding the shields have any effect since they (empeg and Sirius) essentially have the same ground?

I'm hoping my problem is not the sled connections, but I think it is.