Intake Grid Heater Control Module

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This controller and related circuitry will operate as a stand-alone engine grid heater controller for all, two grid, air intake heater systems.


  • Preheat grid heater cycle time is determined by IAT (Intake Air Temperature). Preheat will activate at 59 F and lower.
  • “Wait to Start” LED indicates engine ready to start.
  • “Wait to Start” will range from 10-30 seconds, dependent on IAT.
  • Post-heat cycle initiates after engine start to assist cold weather running and reduce exhaust smoke. Post-heat will run up to 3 minutes.
  • Restart the Grid Heater cycle by turning ignition off/on.
  • Controller is compatible with all Dodge/Cummins IAT sensors from 89 – 02.

Items included with the controller:

  1. Grid Heater Controller
  2. Controller Wiring Harness
  3. Solenoid Ground Wiring
  4. LED dash light – “Wait to Start”
  5. 10 x Marine Grade Shrink-wrap
  6. Instructions

Not included:

  • Grid Heaters
  • Solenoids
More Information
SKU 3123
Price $225.00
Adaptable Engine 4BT, 12V 1st Gen- 1989-1993, 12V 2nd Gen- 1994-1998
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