Tom, Thanks for the info. The problem with this truck is that it looks like the 2 sets of six volt batteries that are in series, are hooked in parrallel to the truck. All I can get is 12 volts to any contact coil. There is no voltage value on the coils, ect. At this point the customer has a 12 volt charger, from another truck, and I have instructed him to charge up one half of his batteries at a time. Thanks, Ralph.
Ralph , If charger is 24 volts , batts. need to be hooked as follows. Two 6 volts each side in series to get 12 volts , then both sides in series to get 24 volts. I beleive these trucks were 12 volt , They use a relay that switches 12 volt use from side to side, strange but true. Truck voltage does not matter as long as we get all batts charged. I can locate more info if needed , Tom