Parts list: № Number Qty Name Options 1 AL171940 1 Wiring Harness W42/1 2 AL76702 1 Relay 3 R44302 AR Tie Band 4 RE207311 2 Electronic Control Unit 5 AL163265 1 Wiring Harness (WITH COMMAND ARM) Next page: ST73141 AutoTrac™ Tractor Kit, SSU and Steering Input Harness, 6230, 6330, 6430, 6530, 6630 ST73143 AutoTrac™ Tractor Kit, Steering System Unit (SSU), 6230, 6330, 6430, 6530, 6630 ST73151 AutoTrac™ Tractor Kit, Steering Angle Sensor Harness and Guard, 7130, 7230, 7330, 7430, 7530 ST73154 AutoTrac™ Tractor Kit, Shuttle Valve, 6320, 6420 ST73156 AutoTrac™ Tractor Kit, Sequence Switch, 6320, 6420 ST73130 AutoTrac™ Tractor Kit, Steering Control Valve to Tractor Brake W/ Trailer Brake and Suspended Front Axle, 6320, 6420 ST73128 AutoTrac™ Tractor Kit, Brake System W/ Hydraulic Trailer Brake, 6320, 6420 ST73126 AutoTrac™ Tractor Kit, Steering System Unit (SSU) Harness, 6420 - 6920, 7220 - 7520 Premium and Premium Plus ST73119 AutoTrac™ Tractor Kit, Sequence Switch, 6320, 6420 ST72987 AutoTrac™ Tractor Kit, SSU Harness, 7X15, 7X20