so i need to hook up another battery in the back of my truck. my problem is all my equpiment is new and has 5 year warranty, shop i bought everything at said i HAVE to have a battery isolator to hook up another battery, and if i dont it will void all warrantys on both speakers and both amps. and 5 year warrantys arnt cheap as most of you may know. so my question is.. Is there any way to get around using a batt. isolator??? and if i do hook up another battery without an isolater. how possible is it that access voltage will go to the amps?? Please and Thank You for you advice David