High Powered Targeting light on amazon

[otherguy]

We used a CREE flashlight similar to what Adam linked. A little smaller from the sounds of it. Ran off a single AA in the stock configuration.
2pk for $8 w/ prime shipping: http://goo.gl/ptnOUi

Ours was wired through a spike so we could turn it off as it could interfere with our cameras detection of the goal.
This means 12vdc going to the flashlight coming off the PDB.

To get down to the 1.5vdc needed by the light, we used a tiny little buck regulator. They are adjustable and $10 for qty 5 on Amazon with prime shipping.
https://www.amazon.com/gp/aw/d/B014Y3OT6Y/

You can get them off eBay for cheaper but you'll be waiting 3-5 weeks for delivery.

The cool thing is that the regulator board is small enough to fit in the area the battery formerly occupied. So packaging was real clean. These will work to step 12vdc down to whatever your flashlight needs.

A note of caution. Some of the metal body flashlights out there have their case shorted to ground. So keep an eye on how things are mounted to ensure isolation from the chassis. A hose clamp with rubber gasket worked great for us.