Ford 3000 Ignition Switch Wiring Diagram. Ford 3000 tractor parts manual. There will be main lines that are represented by l1, l2, l3, and so on. Ford 3000 Tractor Ignition Switch Wiring Diagram Images Wiring Collection from headcontrolsystem.com Ford 3000 tractor parts manual. Unplug the connector from the engine control module (ecm) and remove module. […]