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INSTALLING THE SYSTEM continued 

 

Hardwire Kit 
1. Access the battery compartment. 
2. Connect the hardwire adapter to the battery by securing the  
  black wire to the negative terminal and the red wire 
  to the positive terminal. 
3. Connect the hardwire cable to the hardwire adapter and run the  
  cable to the preferred location. 
4. Use the 36” extension cable if the hardwire cable is not long  
  enough to reach the headlamp on the helmet.

Battery Placement 
1. After attaching the headlamp to the mount, run the headlamp  
  and extension cable toward the back of the helmet. 
2. Place the supplied cable clips in the desired location to secure  
  the cable to the helmet. 
3. After connecting the battery to the headlamp place the battery 
  in a pocket or pack, or use the supplied Velcro straps to    
  attached the battery in the desired location.

OPERATION 
Headlamp Control

 

1. With the headlamp connected to the battery or hardwire kit,  
  press and release the power button to turn the light on. 
2. Cycle through the four brightness levels by pressing and    
  releasing the power button. 
3. To access the flash modes, press and hold the power button  
  until the headlamp starts to flash. 
4. Cycle through the three flash modes by pressing and releasing  
  the power button. 
5. To turn the headlamp off, press and hold the power button for  
  approximately 2 seconds. 
6. Always disconnect the battery from the headlamp when    
  transporting the light system to prevent accidentally turning 
  on the headlamp which may cause overheating and potential  
  damage from high heat or even a risk of fire.

DISCOVER THE NIGHT 
Thank you for choosing the Pro 4200 MX from NiteRider

®

the innovator in technical lighting systems. The Pro 4200 MX 
combines a high-powered headlamp with CREE

®

 LEDs 

and a Li-ion battery.

To get the most from your NiteRider

®

 light, we urge you to 

familiarize yourself with the following operating and safety 
instructions.

PARTS LIST AND IDENTIFICATION 

Please verify the contents of your lighting system: 

Pro 4200 MX Helmet Light Li-Ion 

 Pro 4200 MX Headlamp 

 8-cell Li-Ion Battery 

 Jawbone MX Helmet Mount 

 Hardwire Harness Kit (cable and adapter) 

 36” Extension Cable 

 48” Extension Cable 

 AC Adapter

Pro 4200 MX Hardwire 

 Pro 4200 MX Headlamp 

 Jawbone MX Helmet Mount 

 Hardwire Harness Kit (cable and adapter) 

 36” Extension Cable

INSTALLING THE SYSTEM 
Jawbone MX Mount
 
1. Loosen the thumbscrew enough to allow  the mount to fit over 
  the face guard. 
2. Attach the mount to the preferred side of the face  guard, 
  with the thumbscrew facing down. 
3. Tighten the thumbscrew so that the mount  is secure 
  and does not move excessively. 
4. Insert the headlamp into the mount bracket from  the rear   
  forward, making sure the release lever  locks into place. 
  Then place the cable into the clip  on the side 
  of the mount bracket. 
5. To remove the headlamp, push the release lever  
  and slide the lamp backward out of the bracket.

Note: After mounting the headlamp, adjust it so the beam 
illuminates the trail properly without  distracting oncoming riders.

OPERATION continued 
Fuel Gauge
 
The 8-step, LED Fuel Gauge is located on top of the headlamp 
in front of the power button. When all four LEDs are lit solid green, 
the battery is fully charged. As the battery discharges 
⅛ increments of capacity, the LEDs from right to left, 
successively go from solid green to blinking green, to out. 
With only the final ⅛ capacity remaining one LED blinks red. 
At this time, the headlamp should be turned off and the 
battery recharged.

BATTERY CHARGING 
BATTERY CHARGING AND CARE
 
1. Plug the AC Adapter into an electric outlet, then plug the cable  
  from the AC Adapter into the battery. 
2. The LED indicator on the battery will turn red while the battery  
  is charging. When the battery is fully charged, the LED will 
  turn blue. 
3. Unplug the AC Adapter from the battery by grasping the    
  connectors rather than the cable. 
4. Always store your battery away with a FULL charge. 
  For extended periods, charge the battery every three months 
  to maximize its lifespan.

RUN TIMES

 

Low 

6:00h 

1000 Lumens 

Med 

3:30h 

2000 Lumens 

High 

1:30h 

4200 Lumens 

Flash 

16:30h  1400 Lumens 

Beacon  16:30h  1400 Lumens 
S.O.S.  16:30h  1400 Lumens 

 

Race 

16:30h  600   Lumens

*Run times are approximations and will vary.  
**Race mode is intended for endurance races.

Thumbscrew

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