Hi there, I am 75 years old, been retired 10 years and still like to get out on my bike. I have a manual mountain bike and a 2015 Batribike electric bike that I have had for 9 years. The Batribike is a Granite Pro and is in really good condition however I have a problem with the handlebar controller not working correctly (some odometer figures are missing and the battery power indicator is permanently on 4 out of 5 bars full even when battery is depleted). I have tried to buy a new one but am told this bike has Fallowgate wiring which is now obsolete. Can anyone offer any help please