A friend and I have just finished our first trail camera and we have been reading about external flashes. I found a 50 watt 12 volt halogen light at wally world. What would be the problem with hooking this light up to a seperate motion sensor and battery pack? If you leave the motion sensor in the test position it would come on and stay on for 30 seconds. Other than battery drain why would this not work? You can get a 9 amp hour 12 volt battery for a power wheels vehicle that I think would work fine. Open for suggestions since I have not read anything about this type of setup.