55 1/2 ton, 235 w/generator. I installed a new harness from Classic Auto with original colors. Everything works great except it won't charge. I've had the generator, voltage regulator checked out fine. Everything is new, amp gauge, starter switch, etc. Truck starts fine, I can disconnect the battery after starting engine runs fine. But after starting, with the battery still connected, it's a constant discharge eventually killing the battery? I have gone over the wiring harness, rechecked each connection, reverified everything is where it's suppose to be. Anyone have any ideas? Thanks for reading, I'd really appreciate the help. Roger
