how to hook this Groung loop up?

Here is an ebay listing of the ground loop isolator that I have. Exactly where inline do i hook this up. To the amp side or the deck side? And what are the two wires hanging off and where do they hook up to?

Here is the listing http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50552&item=5755165126&rd=1

I have a 91 Acura Legend and need the Bose radio code I don't have the ref # I only have the serial # and my VIN # do I need to submit the ref # too?
Serial # B10632776
VIN # JH4KA7678MC051347

linky no worky ...... says it's no longer available