RCA Cables

it is a grounding wire...defined by Monster Cable as a "Drain Wire" which serves the purpose of draining electrostatic noise to ground and away from circuitry...the wire is typically only on one end, and therefore not a remote line as afforementioned...

If you look over the rockford website you'll see this wire on both ends though, thats why I said it was a remote turn on. But it can be used either way. Heres alink to the KnuKonceptz site: http://www.knukonceptz.com/detail.asp?product_id=KLA2M If you read the description the last line reads "Includes additional lead for ground loop isolation or remote amplifer turn-on. " so I suppose its both. Allan.

Don’t ever use that cable for a remote turn on wire.  There is a reason for running power and signal cables on opposite sides of the car its called interference. Now that remote wire is still a power wire and will cause interference such as engine noise. That wire is supposed to be used as a ground loop isolator. I have seen that on knukonceptz.com but it is wrong if you use it as a remote turn on wire its no different then taping all your power and signal cables together and run them down one side of the car.