millerscents
10+ year member
who knows what i am
no the jumper wire is only a couple inches long.You will need the harness to bypass the factory amp. Its probably about 17 foot long and is going to run from the dash to the trunk.
The install price is about what I would have charged to do it with parts.
here it is
http://www.scosche.com/products/productID/232
and here is a link to the whole kit.
http://www.scosche.com/products/productID/251
you can also use this one if it is more to what you want
http://www.scosche.com/products/productID/250
good luck