Overview
The Baja Designs OnX6/OnX wire harness with Mode-1 Bar, part number BAJ640118, is a complete harness for OnX6 and OnX LED light bars. It is rated for a maximum of 325 watts and is universal fit, so it is not tied to a vehicle.
The harness removes much of the guesswork from installation and is suited to race use.
Key features
- Complete harness for OnX6 and OnX LED light bars
- Takes the guesswork out of installation
- Suited to race use
- Title names it with the Mode-1 Bar
- Maximum rating of 325 watts
Choosing a fused power source
Race use puts more demand on a light bar circuit, so the power feed matters. Plan the route before drilling anything. Pick a fuse that protects the wire and sits close to the battery, then route the feed through a relay so the switch only handles a small signal current. Keep the fuse dry and away from the hottest parts of the engine bay.
Wire size should follow the full load of the bar plus the fuse you choose, with short runs to limit voltage drop. Inspect the wiring after each event, looking for chafed insulation where cables cross edges, and re-tighten grounds. Light bars take hard knocks, so mounting hardware and cable clamps deserve a check before each run.
- Use a fuse close to the battery
- Route the feed through a relay
- Inspect chafe points after each event
Specifications
| Brand | Baja Designs |
|---|---|
| Part number | BAJ640118 |
| Model number | 640118 |
| UPC | 819314022987 |
| Compatible light bars | Baja Designs OnX6 and OnX LED light bars |
| Maximum rating | 325 watts (per title) |
| Fitment | Universal Fit |
Vehicle fitment
It is built for the OnX6 and OnX light bars rather than a specific vehicle, so check that your bar is one of those models before wiring.
Confirm your light bar model is an OnX6 or OnX before ordering.
Installation notes
Use a fused circuit for the harness, and check local rules before running auxiliary lights on public roads.
What’s included
The complete harness, paired with the Mode-1 Bar.
Not included: The OnX6 or OnX light bars themselves, which the harness is made to connect.









