if im putting an aftermarket stereo system in the truck is there anything special i need to know when installing it due to the amplified speakers?

 

Assuming you are getting a wiring harness kit for it? From what I recall (did this a year ago) I had to attach the power antenna/remote wire from the new stereo to the 'amp' lead in the wiring harness and it worked fine.

 

do you know if the stereo needs to have a built-in amplifier?

 

If you are using the factory infinity system, no you don't need a head unit with the factory amplifier. Just hook up the remote wire correctly and it will utilize the factory amplifier. If I remember correctly, I didn't hook the wire up initially, and had next to nothing for sound, so you should know pretty quickly if you did it right or not.

 

thanks man

 

Its the BLUE WIRE!