haven't driven it far or often enough to know too much about it. What I do know is it would have the battery sizzling (boiling from overcharging) in one trip around the block, and the meter usually read 15.3. Since I unplugged the field wire, the meter now reads 13.6 and the battery doesn't sizzle.
*I might add, when a vehicle changes hands throughout the 34 years of it's life, and owners cut/splice, add and subtract to the wiring, it makes it tough.