97 dakota 122k. Od off light comes on when button pushed, return to od. No shift. Hi rpm. Switched out transmission relay w/horn relay. No od shift.12v on 30, 86 in fusebox. 3wire @ trans vt, blk/w, 12v on br/g; 2wires vt/bk, g/w no volts; 3wires w/o, blk/bl, 12v on org. Couldn't get to wires on top of trans. Check ground wires ok. Autozone did scan p1765 trans 12v supply relay control fault. Po753 3-4 shift solenoid relay. Thanks for any help.