Help me build my DREAM light!!

Hi everyone,
First post on the forum but long time lurker. I have a light the has been a dream of mine for a long time now. The main use for it would be out in the woods as a spotlight. I want to take one of my Vision x light cannons and replace the head of my Dewalt DCL040 with it. I have the light cannons set up now hardwired with just a simple 1" square tube as a handle. they work great but I am limited to the length of my power cord. My dream is to have this light set up with 1000' of usable light and rechargeable dewalt batteries as the power source. I guess my main question here is has anyone done this before or is there anyone out there that is willing to attempt this for me??
Thanks for the help,
Brad

I don't have any photo sharing accounts and I don't see a way to upload one to this sight from my computer or I would post some pictures! I could email them to someone if they would be willing to post for me?
The vision x light is rated for 11-30v input. Thats why I figured this may work.
So I took the dewalt light apart and here is what I found. Battery terminal has four prongs and the battery itself has 5 slots for the prongs. I will label the slots on the battery from left to right with numbers then what it says on the battery: 1) B+ 2) TH/ID 3) C1/C2 4) C3/C4 5) B-. Number 3) C1/C2 is not used on the terminal. Wire coming from the 1) B+ battery terminal has what looks to be an inline fuse or resistor, writing on it says (T2A 250V), it then goes to the on/off switch then to the circuit board. The 5) B- battery terminal leads straight to the circuit board. There is also a yellow wire that leads from 4) C3/C4 directly to the circuit board.
Volt meter readings are as follows for combined slot #: 1&5~20v, 2&5~20v, 4&5~12.06v, 1&3~8.04v, 2&4~8.04v, 3&5~4.01
What I see from this is there are four +positive slots and one -negative. I would think the best ones to use would be 4&5 since it is 12v but I'm not sure if that is linked to all of the cells in the battery. In other words, Im not sure if I would be able to use the battery packs full capacity.
The wires leading from the circuit board to the led show ~3.5 volts on my meter. Not enough for the Vision X.
I went ahead and tried a combination last night and in my tired state of mind with a few drinks in me, It didn't go well. I didn't see that 4&5 produced 12v and I figured since the light is rated for 11-30v it would handle the 20v easily. Here is how I hooked it up. Wire from slot 1) B+ to 30A fuse to dewalt switch to vision x light. Wire from slot 5) B- directly to vision x light.
Click the switch and pop goes the fuse and I think it messed up the light itself. I took the light and tested to see if it was okay on a wiring harness for the rigid lights on my truck. Popped the 15A fuse for that wiring harness. So now either there is a short inside the scosche weatherproof plug leading to the light or even worse, there is something wrong with the light internally. I have another vision x light so I can use that one if this one is dead. For now I think I will use some cheap chinese led cubes to do my testing with. Live and learn I guess.
On a positive note, I trimmed the dewalt housing so it would fit the vision x light on it and it looks freakin' sweet with the light mounted!
So, where to go from here. My thoughts are to have the dewalt switch activate a relay that turns the light on. only problem is the relay I have from the vision x wiring harness is huge and I can't find a good place to mount it on the light.
Disclaimer: I may do some stupid things throughout this adventure. I am by no means an expert at this and I only have a general knowledge on how these things work. Please go easy on me

Thanks everyone,
Brad

Wow, I don't know which light cannon you have, but that's an expensive

If you did what I think you did, the only explanation I can think of is that you wired the voltage backward. It sounds like that damaged the light, though it might be repairable.

The correct terminals to use are 1 and 5. The others are for cell balancing, pack identification, and temperature sensing. These are all used by the charger, but not during discharge.

Experimenting with cheaper lights is a good idea. But be careful you get ones with wide input voltage range. If you get bare LEDs, they will have a narrower range and will NOT work with your battery.

By the way, you don't need to use a photo sharing site. Sites like Dropbox, iDrive, etc also work. All you need is to be able to get a link to the file.