Except: I typically charge my tractors with a Soneil charger via the
accessory plug, however when I plugged the charger into Tractor B and
turned it on the Fuel Gauge Needle didn't move up into the while
"charge" zone as it usually did. Instead, for the time being, I'm
using the built-in charger. Now, when charging, the Fuel Gauge Needle
is slightly higher in the green zone (i.e. something is happening) -
is this standard behavior? Will it gradually move toward CHRG as the
batteries get charged? It's been awhile since I've used the built-in
charger. How do I debug the accessory plug issue -- is there a fuse
somewhere between the plug and the batteries?