Hi Bud,
it is common for the pump to leak, not just stop working.
first place to start is with the fuse.
The pump is located behind the driver side fender at the bottom of the tank, you can remove the fender lining to get access - its not the easiest water bottle to remove due to the weird shape, check the connections/wiring, if the pump is burnt out, you can source a replacement from Goldwagen or BMW, they are not very expensive (<R500 at GW).
Good Luck.