Most auto parts parts stores carry MC jumper cables,can also get from Amazon,etc.
MC jumper cable thread here:
http://www.advrider.com/forums/showthread.php?t=295512
If you decide to replace battery,lots of folks here,including me,like Odyssey batteries.
Think you need the PC 680,that is most common for the 1100-1150 bikes.
Still recommend cleaning and checking all connections and grounds due to age,heat,vibration
Issues common to all motorcycles
JR356