Melted battery, alternator running at 17+ volts

Replaced battery and terminals, ignition switch and 4 pin square alternator connector. Cleaned and tested battery cables off vehicle from starter to alternator to battery. Did voltage drop test on both battery cables and they ohmed out good. The square connector to the alternators color wires didn't match the new connector. The color wires are red, blue, white and black. The original connector had a different orientation with the same color wires in the harness loom.I may have wired it incorrectly but can't find a diagram. The truck has a amp draw of 4.5 amps but only at the b+ side of the alternator, drains my battery quickly.I unhook the negative battery cable when not using the truck, now I found my battery almost melted and leaking so I replaced it under warranty and now have a re-manufactured alternator as well. Any help fixing this will be very much appreciated.