I put 2 6" 500W off-road lights on my truck last night and right as soon as i got done hooking them up my truck wouldnt start and i put another battery in it and it still wouldnt start. what can i do and what can i look for? does anybody have any ideas of what i can do?
Check your alternator and starter. I would take it to an auto parts store and get them to check it for you. If its not even starting it sounds like you fried your starter somehow. Are any lights on or anything when you turn the key?