got rear ended now the truck won't start w/pics

[X5_ROC]

got rear ended now the my X5 won't start my mechanic can't charge the battery and nothing works.
any clues? I know the wire harness around the back could be it. The active restraint system on the driver side kicked in (seat belt electric motor) then start a fire between the seat and the center.

any ideas? I am see their claims adjuster tomorrow morning at the shop. I want to make sure they cover everything. since it is only worth $10k I hope they total it.
-the exhaust is bent on both sides.
-bumper
-tailgate
-seat belt (pull out seat)
-wiring
-and it won't start the mechanic has not clue.

The guys truck




my truck









i had to get towed because of this...



see the burn marks





battery and harness:









and the Insane Clown Posse across the street,