Ok so to sum it all up I recently put in new HIDs. I've also had some of my sound system rewired. However now I am hearing a little whine coming from the back end of my truck. I'm assuming it's the fuel pump. Also my check engine light is on. I'm wondering if I reset my truck's computer if there is any chance of maybe it fixing itself. I'm hoping that it's just an electrical problem. What do you guys think?

 

Are you sure the whine isnt coming from the differential? And as far as the check engine light you need to have the code read. Most auto part stores read them for free.