Parts list: № Number Qty Name Options 1 AA57813 1 Plug 2 AA69792 1 Control SeedStar™ 2 Seed Monitor / Variable Rate 2 AA74595 1 Control SeedStar™ 2 / SeedStar™ XP Seed Monitor / Variable Rate Next page: ST540228 Radar Sensor Adapter, 7920 Tractors ST749944 Attachment, Mounting Bracket, Monitor ST433443 Frame Control Box / Mounting Brackets - SeedStar™ / Variable Rate Third Width Disconnect ST758910 Radar Mounting Bracket and Harness, 7920 Tractor, Attachment ST748400 Radar Sensor, Attachment ST540130 Monitor Console, 350 / 450 ComputerTrak™ ST322821 Wiring Harness, Pneumatic Down Force Compressor (740101 - ) ST769385 Variable Seed Drive Wiring Harness, Two Motors ST322674 Electrical Connectors - Continued ST322671 Hitch Disable Switch For Use W/ 55 Series Tractors