? about installing new head unit, sub, and amp

[nnk61209]

I have the 99 x eddie bauer with the mach system. The sub is blown and i think the amp is too and the screen dont work on the HU so I want to change these 3 things out. I have been up all nite and read thru more than 30pages of post and have not seen my answer. lol my question is to switch out these 3 would I have to rewire all my speakers and everything or just put my HU in and only have to run the wires for my amp? And how exactly would I do whatever I have to do and what would I need?

 

[NRA4ever]

You can use the factory speaker wires & radio power wires. You will need to run a power & rca cable to your amp & wire to your sub