http://www.stingerelectronics.com/im...stallation.pdf

I was looking at that isolator as I have a spare agm battery laying around being maintained on a charger. I was probably going to put some subs in the trunk and I am looking at putting in an isolator to make sure the main battery doesnt get drained by the second battery. They are different types of batteries and the one put in the rear will be a yellow top optima. Where could I get access to a true ignition source? Thanks for the help!

 

Try this site, it might have what you are looking for (The red type is a link, click it):

Car Alarm, Car Stereo, Mobile Video, and Cruise Control Info for Installers