i was wondering when you connect the amp and sub does it have to do anything with the navi?? or u jst connect the hi/lo and run the power, ground, ect??

cause the shopp told me u have to do something with the navi and i think they were bullshietiin me or something .

 

what are you trying to do and what are you gonna hook up because if you using the factory radio you run a power, ground and a remote then you will need a stepdown from the factory amp to and rca input of the amp or just run stepdown from the two sub 6x9 wire in the rear deck will do if you dont know what you doin and if the amp dont have a crossover on the amp

 

you will need some sort of line out converter, which really doesn't have anything to do with the nav, more with the factory headunit. The amp needs RCA (preamp) outputs to get signal, and your factory headunit will not have that, so you'll need to create some, basically. Other than that, there isn't anything that needs to be done up front.