So after owning my 17 SGS for almost 18 months it was starting to crank over slow. Hearing that Harley batteries frquently only last about a year I replaced it with an aftermarket brand that carries a 2 year warranty. I have used this brand on other bikes with great satisfaction. After almost a month the bike would start to turn over and just stop cranking even while holding the start button down. I would have to turn off the igntion switch turn it back on and the bike would start right up fine, that is until last weekend after I washed it and tried to start it. It started to crank and just stopped, turning the ign switch off and on did noting. I don't know why but something told me to check the wiring. I started at the starter (where else would you start 
) and found the nut holding the cable on almost completly backed off, in fact I think it only stayed on as it was welded to the stud from arcing. I had to brake is loose, the threads on the stud and the nut were damaged. I took a new nut and carefully threaded it on using some force to get past the damaged part. Enough force that I thought may brake the stud loose from the starter, luckily it did not. My guess is the original nut was never tight from the factory. So word of caution double check your nuts boys.
) and found the nut holding the cable on almost completly backed off, in fact I think it only stayed on as it was welded to the stud from arcing. I had to brake is loose, the threads on the stud and the nut were damaged. I took a new nut and carefully threaded it on using some force to get past the damaged part. Enough force that I thought may brake the stud loose from the starter, luckily it did not. My guess is the original nut was never tight from the factory. So word of caution double check your nuts boys.
