over the past few months my bike has starting to act up. today i had my bike out and here is what i have all noticed...
My RPM TACK, IS working but my SPEEDOMETER is not working,

my Cruise controll will not work,

My engine warning light is on,

my Engine will back fire of and off a few times,

When im at a traffic light and let of the gas sometimes my bike will shut off or even sometimes when im just drifting down a hill it will shut off on me

What could be some things to try to fix are Harley without taking it to the shop, we can't afford a big Repair Bill at this time,

any Ideas or good websites on harley trouble shooting will be a big help.