[. . . ] Photon High Output Helmet Mount Light System Owner's Manual Thank you for purchasing a Photon H. O. This light system is constructed of the highest quality materials, such as cold-forged aluminum housings, heavy duty cords with strong positive-click connections, and halogen bulbs with dichoric glass reflectors. [. . . ] Loop the strap through the "D" ring and maneuver it back down through the same hole (see Figure 3). Once the strap has been pulled tight, secure the light using the provided hook and loop strap. Connect the battery cord to the light cord, and snap the cords firmly together. To operate: To turn the headlamp on and off, push the switch at the back of the headlamp housing. Fig. To ensure long battery life, it is recommended that you recharge the battery immediately after each use, and always store your battery fully charged. battery charger contains a trickle charge feature which allows the battery to be left on recharge indefinitely without harm. Once the charger switches to trickle mode, it must be unplugged from the wall outlet before a new charge cycle can begin. Bulb Replacement - Read Carefully! Take care when replacing the bulb to avoid damaging the bulb connection. 7. Rotate the headlamp until aimed properly, and securely retighten the assembly bolt. The lightweight battery pack can be carried in the waist pouch supplied with your light, or simply stashed in a jersey pocket or hydration pack. !Maintain air flow over light during use. Bulb Retainer Clip Exploded View 1. [. . . ] Next, insert the bulb lead wires into the smaller holes in the socket. Do not plug the lamp into the battery until after this step is complete. [. . . ]