Yes, the ground is good. I think I just figured it out though. The fuse to the harness is blown out. :facepalm: Should have checked that first. But since I had directionals and brake lights, I assumed incorrectly the fuse was still good. But the harness must have been tapping the tail light power for those, and main power for running lights. The harness is a complex web of relays and wires, that I still don't completely understand.All your grounds are good?