Cummins/Onan Energy Command 20 — Genset Harness Installation
Installation · Wiring harness
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
- When DC wires are run with AC wires, electrical induction can occur; route the controller harness separately from AC load wires.
- Exhaust gases are hazardous; seal all holes to prevent entrance of exhaust gases into the vehicle interior.
Procedure
- Route the harness from the genset to the control panel, ensuring connectors match at each end.
- Protect wires from all hot, sharp, and abrasive surfaces.
- Seal any holes where the harness passes through bulkheads.
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.