so you said after the big 3 you still get dimming with 1100 watts? I think even with your low output alt it shouldnt dim. I dont think it should. asfar as the fuse inbetween the alt+ and the batt + is more then protecting of short outs. god forbid that wire come lose from the batt end or the alt end, you have a live wire swinging around with a lot of ground spots that it can hit and then short out with no fuse to stop it. it can burn your alt, or make your batt explode. I would fuse it, I did on mine. better safe then sorry. feel me?.. looks good and clean though. I have an 06 altima and its a PITA to fit your arm anywhere in the engine bay..lol