Hey guys,
My Dad's F1000 has a thumb warmer problem. We checked the voltage at the plug connection near the throttle & got around 14.5 volts at idle but only on two of the prongs. The 2 outside prongs. Can't get any voltage when checking either outside prong to the middle prong. Doesn't matter what position the switch is on. Does this make any sense? Am I testing this properly?

Thanks.