I'm afraid I might have to replace our fresh water pump next weekend. I say "might" because I didn't have my volt meter with me to confirm power is present at the pump. The fuses look good and the light comes on at the switch. The pump does nothing - not a sound and no heat. If I end up having to replace it, does anyone have any tips and/or warnings? It looks pretty straightforward to me, but I am new to this. It is a Shurflo 5.7 GPM.