alrite guys i know this might sound annoyning, but i just want to put a sub in the max with the stock bose. So i just by the wire kit wit, and rcas rite? Then i just run it to the amp. Is it necessary for me to get a high low adapter? and how do i take out the bose head unit? Thanx. the amp is a 500w poweracoustic with a built in crossover, and i have a l7 solo barrick

 

Just do it like this:

http://www.jlaudio.com/amps/pdfs/SYS_5.pdf

No need to take out the HU.
Depends on whether or not your amp has signal sensing turn-on however.