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Wheelchair Lift Safety Interlock

InPower’s Model ITM127 interlock systems provide the required FMVSS 403/404 interlock functions for public-use platform lifts installed in select 2009-2023 Ford E-series van and cutaway chassis. 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.

Wheel Chair LIft Safety Interlocks ( ITM127-E21, ITM127-F, ITM127-E21 )

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
  • Combined driver display and control module
  • Large flashing door ajar indicator
  • Status/Diagnostic indicators
  • Monitors up to four door switches
  • Plug-and-Play wiring harness
  • Direct interface to platform lift systems (Braun, Ricon and Maxon)

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


  • Lift Door In: ground input to interlock (Violet)
  • Monitors up to three additional doors for door ajar flashing indicator, no shift lock (blue, orange, green)
  • 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: +8.0 Volts to 16 Volts @ 2 amps (red)
  • Operational temperature: -40C to +85C
  • Supports older model Ford E vans

System Diagram:

Mechanical Drawing:

Product Literature and Resources:

ITM 127 Data Sheet

ITM 127 Owners Manual

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