I am about to install the AVIC-Z1 on a 04 coupe, but have some questions:

1. From the Z1 unit there are speaker wires do i need to connect them to each speaker even though i am going to hook up a JL 300/4 amp and change all my speakers to aftermarket?

2. where are the reverse signal wire and speed signal wire located i have a 04 coupe with navi?


Thanks