Hello, lots of good info here. Mainly the one about using the correct relay. The one from Rockauto that you ordered doesn't have enough capability to carry the current. This is the correct relay.
http://www.metraonline.com/part/IB500 . I only run one in my show truck because I play it all day at shows, My batteries in my 90 Burban are in parallel but I don't have anything running other than a base radio with a 10in sub on a JL 1000/1right now. hope this long ass message helps but If you need any help feel free to email me at
[email protected] I'm a Mastertech installer with over 30yrs exp.