1993 Camry Le..

It has the factory amp under the passenger seat.

I want to install a new amp that I will wire direct from the Head unit and then to all the speakers, instead of through the toyota wiring.

Where can I get a amp bypass harness that won't effect the cars electrical wiring?

 

Do you mean a stereo with built-in amp?

Some Camry already have the extra plugs for this setup in addition to the one for the remote amp. Look for a couple of plugs in the remote head area.

The link below has drawings of these plugs:

http://www.installdr.com/Harnesses/Toyota-Wiring.pdf