Cummins/Onan — Connect Components (EC-AGS+ Gateway)
Installation · EC-AGS+ Gateway Harness and Y-harness
From a Cummins/Onan owner's manual covering: LP 2500, LP 3600, LP 5500, LP 6500, QD 10000, QD 12500, QD 5000, QD 5500, QD 6000, QD 8000, QG 2800, QG 4000…. Check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKB, Cummins/Onan HDKC, Cummins/Onan HGJAA, Cummins/Onan HGJAB, Cummins/Onan HGJAD, Cummins/Onan HGJAE, Cummins/Onan HGJBB, Cummins/Onan HGLAA
Before you start
- Accidental starting of the generator set can cause severe personal injury or death. Disconnect the starting (battery) cables before performing service.
- Always disconnect a battery charger from its AC source before disconnecting the battery cables.
- Seal all holes to prevent the entrance of exhaust gases into the vehicle interior.
- Make sure the ground connection is secured.
Procedure
- Plug the 12-pin connector from the harness to the EC-AGS+ gateway.
- Route the other end of the harness from the gateway to the Y-harness.
- For gas generator sets, plug the 8-pin EC-AGS+ harness connector into either lead of the Y-harness.
- For diesel generator sets, plug the 10-pin EC-AGS+ harness connector into the longer lead of the Y-harness.
- Connect the main lead of the Y-harness to the generator set.
- Connect the remaining Y-harness connector to the remote start/stop switch harness.
- Route the red wire lead to the positive terminal of the generator set starting battery and extend as necessary using butt connectors.
- Provide circuit protection by installing a 5 Amp fuse in the red wire lead.
- Locate the common ground location on the vehicle and route the black wire lead to the common ground.
- Route the grey wire lead to the engine battery positive terminal (optional connection).
- Insert battery ring terminal to the wires and connect the wires.
- Use cable ties at not less than 0.5 m (20 in) intervals to keep the wire bundle neat.
Specs & values
- Harness battery connection wiring is single conductors of 0.81–1.29 mm (16–20 AWG) wire
- Minimum separation of 127 mm (5 in) from AC power sources
- UTP cable bends or radii should be no less than 8 times the cable diameter
- 5 Amp fuse for circuit protection
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKB →, Cummins/Onan HDKC →, Cummins/Onan HGJAA →, Cummins/Onan HGJAB →, Cummins/Onan HGJAD →, Cummins/Onan HGJBB →, Cummins/Onan HGLAA →
Source: Cummins/Onan owner's 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.