When driving at night during off-road rock crawling (not baja) you turn off the headlights as they provide very little useful light. Instead you light up the underside of your truck to see where you are going. Ideally you would to have 2 lights at the front bumper and 2 lights behind the front tires and 2 lights in front of the rear tires and 2 lights at the rear bumper. That's 8 if your counting. Normally people use 55 watt H3 driving lights, but these pull a ton of amps and get very hot too.
My goal is to use some Cree P4 XR-E and a constant current driver or two.
Need ideas on drivers and number of LEDs per string. I would suspect I should run 3 LEDs in series with my 13-14v car battery application I've read a little about the LM317 as a constant current driver. I'm looking for somebody that has used these LEDS and what driver setup did they use. Would a variable driver be a good idea too. Does anybody offer a ready made unit?
I'm ging to mounting the LEDs to some aluminum flat bar as a heat sink, would JB weld be ok? How about water proofing them? This is all new sorry for the 20 questions.