Get 1 or 2 of these, Cheaper and it does the Job... Works great for me... Mount 2 of them with a $3 Off / On Switch... You are all set...
The Power Rating on them is NOT too bad either about 1.7amp, it doesn't suck too much. But if you are looking for Direct Lighting, like Headlights... Than these are NOT for you. These lights will light up good but it will disburse evenly rather than Head-On...
Although $16.49 each with Free Shipping is NOT bad, compare to those LED lights they are selling for Tractors.... Search on Ebay 10W White LED Flood Light Washlight - 12V DC or Item 110836734037
Easy to Mount since it has predrilled holes...
Good Luck with whatever you decided!!!