Ignition Switch fits New Holland 3010S 5610S 6610S 7010 7610S 8010 fits Ford 2000 2600 3600 4000 4110 4600 5610 6610 7610 E8NN11N501AA E7NN11N501AB

Lucas-style key ignition switch rated at 35 amps, covering both diesel cold-start and gasoline applications across the broad Ford utility tractor line from the early 1970s through the late 1980s. Seven terminals, five positions (Off, Accessory, Run, Heat, Start), with a dedicated heat/ether terminal wired separately from the ignition circuit. The "Heat" position is what separates this from simpler four-position switches, and it's the one that most often causes problems when troubleshooting no-start conditions on these tractors — worth checking continuity through all five positions before assuming the switch is the culprit. Key included.