“How do I complain about the installer refusing to install my amplifier? I was told my amplifier could not be installed because they needed to run power from my battery to the amp (of course) instead of using wiring behind my dash (which I thought was wrong). The wiring to my battery should be included and is recommended I thought. Was the installer being lazy and installed other amps on "accessory" level power or should I have demanded him to install it correctly?”