I just want to apologize first if this is not the right place to post this question.

I am in the San Diego, CA area, and I have a 2005 Honda Odyssey. Last year a local shop had installed some components for me (wiring, monitors, HU, cameras, etc). Right now I would like to change some of the cables/wiring, incorporate a shutdown controller/tank circuit, and verify that everything was done correctly. Is there an installer that someone can recommend?