On a P1000-3. I got a clunk when I went from park to drive and moved forward about 10 feet. It’s the locked rear diff from being in park going into turf mode a little late. I adjusted the cables in the little black box behind the drivers seat under the bed, have done this before. But now, the drive indicator on the far right of the instrument panel only shows turf mode. I put it in 4 lock and it appears to be in 4 lock cause it’s hard to steer and the steering spins to neutral when I let it go, but no indication in the drive box, and no yellow 4 lock light. Everything else works, fuel gauge, miles when I drive, temp gauge, speed and such. It worked fine last time I had it out. What do I need to look for! Thanks.