ok my bose system is sorta messed up, sometimes it makes this annoying squealing noise, so i wanna replace with a different hu and speakers, when i remove the stock and hu and replace it with a new hu and speakers can i just use the same stock wiring or do i have to do a new wire system for my new hu and speakers

 

You can stick with the old wires.

 

oh ok i so i can just use the old stock wires, and just match up the colors??

 

Pretty much. Follow this link, it should help you out with some of the wiring information.

Additionally, you might want to get the PAC SWI-X adapter so you can still use your steering wheel mounted audio controls.