I have 04 20x w/2 HDS 7 gen 1 linked. When I use down and side image I have to have Yamaha running. If I run them while fishing on front deck for over 30 min. I can't start Yamaha up again. I have LSS1 but it is wired to a toggle switch to turn on down and side image. I can use imaging when idleing but if I don't shut off toggle switch when I switch back to regular grapg I run down batteries. I am hooked up wrong . I use Optima blue top battery. Thanks for any info.