on a side note...
http://www.team-bhp.com/forum/iipcache/76310.jpg
That is not an elegant solution.
Now it looks like i need to provide an image worth linking to... and this is pretty much only for Pioneer head units. It's not a fix for everything and not a good idea unless you specifically have an open circuit on the RCA shield. You shouldn't recommend this blindly.
I buy RCA's with good head shells that are two pieces. i avoid molded RCA cables. I want to be able to get in there if necessary. Streetwires has some RCA's with nice, small headshells that are easy to use. I recently installed a Monster Cable 6 channel RCA (one common body for most of the run). And straight from the factory, one of the sets had the center pin and shield connected. poor quality control.