Wiring an amp and a sub, Installation Help Please Options

[powerkor]

Hello, Im trying to install an amp and a sub (both from the trunk) of my 97 ST celica.

My understanding is that I power the amp by wiring directly onto the red battery terminal, but my question is where in the firewall is there the most accessible hole to run the wire through? Let me know if I should do it this way, or just try to hook it up to my fuse box instead.

My second question: to bridge 2 channels together, I'm using the + channel from the one and the - channel from the other, I think this is how you bridge, but im not too sure, this is my first attempt.

I plan on doing this later today, so the quicker the feedback the more happier you guys would make me :-)

Thanks for your time.

Eric

[Drocay]

If your head unit does not have it u can hook it up to your ignition wire on back of headunit or u can hook it up straight to the ignition fuse either way your amp will activate when ever u turn on your car.