Its about 6 month old, wondering if I should be worried at all if it was messed with, hoping when i plug it in my truck doesnt do a back flip and light on fire.

Nobody?

I guess you'll find out when you hook it up...as for it doing a backfliup and lighting on fire...can you make sure to video it when you plug it in? I want to make sure i see this happen!! haha

Guess the only thing you can look for to know if it has been tampered with is look to see if the stickers are broken. Other than that put er on and give it.