Has anyone installed the Metra Harness for the JBL Systems?

[gkatmar]

I was looking at upgrading my factory radio and came across the Metra Harness for the JBL Systems. Has anyone used this harness yet? Any negatives to it? Thanks

 

[sketch1]

What is it? Care to post a link

 

[gkatmar]

http://cgi.ebay.com/ws/eBayISAPI.dl...MEWA:IT&viewitem=&item=150051326933&rd=1&rd=1