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Home›Repair guides›Cummins/Onan›Final Connections and Testing

Cummins/Onan Energy Command 20 — Final Connections and Testing

Installation · EC-20 controller

For the Cummins/Onan Energy Command 20, from the Cummins/Onan service manual.

Applies to: Cummins/Onan HDKA, Cummins/Onan HDKB, Cummins/Onan HDKC

Before you start

  • DO NOT OVER-TIGHTEN MOUNTING SCREWS, IT MAY DAMAGE OR DISTORT THE ENCLOSURE.

Procedure

  1. Plug the genset end of the connector into the genset.
  2. Pass the controller end of the harness through the cutout for the controller.
  3. Plug the controller end of the harness into the controller.
  4. Insert the controller in the cutout hole and secure it with the supplied screws (do not over-tighten).
  5. Install the magnetic overlay.

Tools required

  • Screws supplied with the controller Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKB →, Cummins/Onan HDKC →

Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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