How it going guys I have a tech package tsx and want to install a system using my stock head unit is there any DIYs out there showing where to grab the sign to install Amps

 

you can either do it by taking the signal at the sub(if you have a sub) or direct from the amp.

 

Depends,

if you just want to add a subwoofer then do what ^^ he said and use a line out converter to get your line driver signal.

If u want to add / replace full range speakers with an amp, then you need to take the signals from the output of the stock amp. You will need some sort of signal summing processor such as the JBLMS8 to use as a line driver for your aftermarket amp.

Search MS8 in this section of the forum, someone here has done it before and should have a wiring diagram for you to use.