if your truck cuts off at idle, that means your alt isn't putting out enough to run the sys. and the truck. i had a friend that had the idleing problem and he had to swap to a high output alt and 2 optma batts behind the seat, i wouldn't know why it cuts off when you hit a bump. but changing the alt should give enough power to run the truck and the system. like a 200amp ho alt or sumin. what kind of truck is it?????
I have ran up to almost 3k Of power through a stock electrical with out my car shutting off or any of this type of stuff happening. Check all you connections because it sounds like something has a bad connection.