Monsoon Speaker!
There is no need to disconnect the sail panel speakers although you can if you find that they provide too much bass with a separate sub installed. You will need an LOC (line output converter) to convert the speaker level signal from the head unit to line level for input to your sub amp. You can connect it at the head unit but it's generally more convenient to get the same wires at the input side of the Monsoon amp in the right rear quarter panel. The pinout for the Monsoon amp is in the Monsoon FAQ sticky.
Replacing the factory head unit is a good idea for clearer sound. Even if you do that, it's not necessary to replace or rewire the speakers - you can install a head unit in place of the Monsoon just as you would with any other factory stereo. The factory speakers should be okay for a while so you can keep them or replace them later if you want (you'll have to eventually because they tend to fall apart).
There is no need to disconnect the sail panel speakers although you can if you find that they provide too much bass with a separate sub installed. You will need an LOC (line output converter) to convert the speaker level signal from the head unit to line level for input to your sub amp. You can connect it at the head unit but it's generally more convenient to get the same wires at the input side of the Monsoon amp in the right rear quarter panel. The pinout for the Monsoon amp is in the Monsoon FAQ sticky.
Replacing the factory head unit is a good idea for clearer sound. Even if you do that, it's not necessary to replace or rewire the speakers - you can install a head unit in place of the Monsoon just as you would with any other factory stereo. The factory speakers should be okay for a while so you can keep them or replace them later if you want (you'll have to eventually because they tend to fall apart).
Certainly, speaker replacement and using an aftermarket amp can make a huge difference in sound (unless your idea of a good audio shop is Wal-Mart). But those on a budget can save that for later and still have decent sound by upgrading the head unit and adding a sub (with amp) while keeping the factory amp for the other speakers.






