SwapHelper.com Grid Heater Controller (SKU 3123)

We're currently out of stock, but have more on the way very soon! Estimated restock date is October 8, 2026.

The SwapHelper.com Grid Heater Controller brings OEM style grid heater operation to your swap truck or other application. Designed for 1989-2002 Cummins® (can also be used on 12 Valve 6BT's, 4BT's, ISB's and Common Rails if desired), the controller uses the factory Cummins/Dodge® IAT sensor and solenoids (not included) to help your engine start in cold weather. Includes a full wiring harness pre-wired for the IAT sensor and solenoids, a "wait to start" dash light so you know when to start your engine, and a full set of instructions.

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

Features

• Preheat grid heater cycle time is determined by IAT (Intake Air Temperature). Preheat will activate at 59F 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 1989–2002.

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
• Intake Air Temperature Sensor