APDTY 711665 Four Wheel Drive Front Differential Actuator 4WD Engage Indicator #3 Switch Fits 1989-2000 Toyota 4Runner / 1989-2004 Toyota Pickup / T100 / Tacoma (Replaces Toyota 84222-35070, 8422235070) Solves "Stuck In 4-Wheel Drive" & "Blinking 4X4 Light" Problem Mounts In Front Differential Plunger Actuates To Engage or Disengage The Front Differential