Backup lighting / Reverse Lighting The reason why I mounted the backup lights on my rear axle is to protect them from general on and off road debris. The rear axle guards the light when rolling forward and the sway bar guards them when backing up. So far I've only burned up 1 bulb for my backup lights. I've never crushed or damaged any of the backup lights yet. The bulbs used in the backup lights are 100 watt aircraft l