A:AnswerI have one of these for my P3.
Velcro the light in front. I also velcro the small board on side, run metal piece through a vent towards the battery use tweezers to mount over battery posts. No worries and a nice visible light even in daylight hours.
A:AnswerTHEY CANT MOUNT AND 3 SERIES BUT DONT. THERE JUNK I BOUGHT TWO SETS FOR NIGHT FLYING. THERE BRIGHT, BUT SO MUCH SO THE PLATE GETS HOT AND MAKES THE VELCRO NOT STICK AND BURNS LEDS OUT FROM THE HESAT