My pump has an in-line fuse that looks like a black block right near the pump. If yours does too, it could be something to check. I guess it's there in case the pump draws too much juice and on it's way to destruction. The only way I found it is that's where I secure my extend-a-stay and the cap fell off once. Never gave it a second guess before that.
You could also do some spark chasing at the pump if you think that's easier.