Cummins/Onan — Final Connections and Testing
Installation · EC-30 controller and harness
From a Cummins/Onan service manual — check it applies to your exact model before use.
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
- Plug the genset end of the connector into the genset.
- Pass the controller end of the harness through the cutout for the controller.
- Plug the controller end of the harness into the controller.
- Insert the controller in the cutout hole and secure it with the screws supplied with the controller.
- Install the magnetic overlay.
Tools required
- Screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Control panel secured with supplied screws
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.