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Wheelchair Lift Safety Interlock

ITM126-E21, ITM126-F, ITM126-F17
Wheelchair Lift Safety Interlock for Ford E-Vans. All doors lock the shifter.
InPower’s Model ITM126 series of interlock system provides the required FMVSS 403/404 interlock functions for public-use platform lifts installed in select Ford E-series van and cutaway chassis from 2009 through 2023. The systems consist of a combined driver’s display and control module as well as an easy-to-install plug-and-play chassis wiring harness. ITM126 modules are configured to lock the shifter if any vehicle door is open.

Wheel Chair LIft Safety Interlocks ( ITM126-E21, ITM126-F, ITM126-F17 )

Ford Interlock System For Monitoring Platform Lift Door And Up To Three Auxiliary Doors

Key Features:

  • Supports 2021 E-Series Ford van and cutaway chassis
  • FMVSS 403/404 interlock functions for public-use platform lifts
  • Combined driver display and control module
  • Large flashing door ajar indicators
  • Status/Diagnostic indicators
  • Monitors up to four door switches
  • Plug-and-Play wiring harness

Full list of features available on the Data Sheet (See Product Resources).


  • Lift Door In: From lift door closed switch. Ground when the door is open/ajar (violet)
  • Monitors up to three additional doors for door ajar flashing indicator, no shift lock (blue, orange, green), all door inputs lock the shifter
  • Lift Enable: +12 volts @ 1.8 amps to allow platform switch operation (yellow)
  • Size: 3.5″” W X 1.5″” H X .56″” D
  • Operational Voltage: 8 Volts to 16 Volts @ 2 amps
  • Operational Temperature: -40C to +85C
  • Supports older model Ford E vans

System Diagram:

Mechanical Drawing:

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