Where's your water tank? It's usually close to that since the pumps don't pull prime, they are gravity primed, so below level of tank, close to it. You could also fill the water tank (close low point drains first) and then turn pump on, follow the noise. Don't run extensively with no water, but if tank is full it will probably self prime.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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