2012 Durango Negative Jumper Post Snapped off

Was wondering if there are any negative ground wire behind the negative jumper post on the left side of the engine bay, mines snapped off with the bolt stuck inside, i managed to get the bolt out, but the other half of the bolt is still inside the body frame i want to drill it out and put a new bolt but my fear is if theres a ground wire being held in place with the piece bolt, please if anybody knows whats behind that frame and behind the passenger side fender wires or anything let me know. Thanks