I am working a freighliner box truck. M2 106. No start with key. I scan it and got SA: 33 buckhead and 191 transmission putput shaft speed sensor abnormal. No power to starter solenoid when key turn to run. I changed ignition switch but was not the problem. So i ran wire from the ignition switch ST pin to starter and now it start with key. but it drive now without shifting. i was go to change the output sensor. But i think this is electrical. any ideas?