i had the same problem it was the off/run switch. pushing that switch downward
and use the ign. switch to kill the bike fixed mine
hope this helps

and yes it did happen

 

Had the relay thing happen to me,all fuses and relays clean,dielectric greased, no corrosion,had a bad relay causing trouble,replaced it,per Harley,no problems,it was explained to me at that time there was a issue with some bad relays causing drained batterys,some had been replaced several times before the relay issue was uncovered,some cases of engine just stopping and throwing codes,all due to bad relays

 

When you got the new battery, did you or dealer run it on a charger for a bit? Batteries sitting on a shelf will run down so when you put them in the bike, the "100% charge" becomes a lower number than the 14.7 VDC and will charge to only that percentage as "100%" (even if it is actually only at 85%). May also have surface discharge caused by overly dirty battery case. Have you had the battery load tested? Even if a battery reads 12-15VDC, it can still be "dead" because there is little or no current. If you found the loose negative cable AFTER the battery ran down, it may be because the charging system did not charge it due to this loose connection so charging the battery may solve everything. If not, here's a few tests you can perform or have performed with the proper equipment:

*To shut-off alarm, have FOB in vicinity or remove maxi-fuse after energizing the ignition for 8-seconds, turning off, then removing maxi-fuse.

1. MILLI-AMP DRAW:_______mA {this tests the static or sitting voltage drain of the bike's electrical system when just sitting in the garage with the key off} DVOM=multimeter
DVOM TO “AMP” SETTING... PUT DVOM IN SERIES WITH ELECTRICAL SYSTEM AT MAXI-FUSE or DISCONNECTED BATTERY (-) TERMINAL... RED LEAD TO BATTERY (-) TOWER... BLK LEAD TO BATTERY (-) CABLE... KEY OFF, WHAT IS THE READING? {The TSSM/HFSM will draw 16-25 mA initially for 30-seconds should drop down reading of less than 3.5 mA draw. If it does not, there may be a security system problem}

2. MAX VOLTAGE:__________VDC {This will test the charging system with bike running. Keep in mind that even if the numbers of 13.5-15VDC is present, the battery may not be receiving this voltage due to bad connections or battery itself; this just checks charging output}
CONNECT DVOM TO BATTERY RED TO RED, BLK TO BLK BIKE RUNNING RUNNING REV TO 3K RECORD VALUE {Should see 13.5-15 VDC)

3. The other alternative is to have bike tested at the dealer using the MCR-101 HD Analyzer which will test battery, starting, and charging circuits and give a paper print-out and will alert to anything wrong.