Hey Bruce,

Sixto is right. The lines are automatically heated when outside temp requires it. The wires you see recieve current on the nozle side and are connected to nothing on the pump side.
BTW are you shure your pump is cracked out ? Mostly it's the rubber washer underneath it that's gone. Easy to check, easy to replace and cheap!
You can simply pull the pump out ( straight up as it slides into a dovetail fit onto the reservoir ) to check this out. I paid $24 for the pump almost two years ago.

Danny