trailer hitch wireing location?

Iv got a 94 jimmy slt. Im installing a tow hitch. I bought the trailer hitch harness. But where do I wire it 2? are their wire's in my trunk under the capert?

Please help.

Thanks

btw, this is the harness i got

http://shop.easternmarine.com/index.cfm?fuseaction=catalog.prodInfo&productID=5034&categoryID=210
http://shop.easternmarine.com/images/product/5034.jpg

http://i119.photobucket.com/albums/o160/sergmantt/STP60900.jpg

Do i have to soder the wiring? is this even it?

anyone? can someone with a harness check where it leads 2?

thank you

where is the rear tail light wiring harness location?

The wires in post #3 are the right colors, but do yourself a favor and get rid of those connectors, they have no place on a vehicle, nothing but trouble! Solder in the new wires.