Charging issue in my old FrankenFord. My truck is an early 70's box turned into a dump truck. Base is an f350 and cab is 1970 f100. I've found two related wiring schematics, this is the one that matches my wiring... http://www.fordification.com/tech/wiring/wiring-diagram-70F350_master.jpg (sorry for the outside link...) Nothing has been changed the 8+ years I've owned the truck except for the random replacement of the fuse link. The last several months I have been trying to sort this problem as it seems to have gotten worse. I installed blade fuse holder and even replaced entire fuse box with blade fuses. No change to problem. All grounding seems ok. Replaced voltage regulator, same. Tried a spare alternator, same, both bench tested good. One thing I have discovered is charge voltage is 22-24 volts, which I assume answers the blown fuse. I can't say I understand how system works but lack of stater connection confuses me.