2008 harley sportster 1200xl Low bike cranks won't start, no spark.

I have a 2006 Harley FXDWG with 13,900 miles and had a similar problem. Bike would crank and it would run, but when running, it would act like it would run out of gas, #&%&%%%^ and on, like the gas wasn’t flowing. Turned out to be the voltage regulator. Didn’t even have to replace it, just something had come loose. I completely unplugged the voltage regulator, plugged it back in. Did this a couple of times to make sure the contacts were good to go. Made sure the contacts on the battery were tight, and BANG. Brand new. Problem fixed. My local Harley shop wanted $240 for new regulator and another $100 to install. Glad I got it myself for FREE.