If his Jayco is like the 1978 Jayco Cardinal we had, it's a little more involved than just changing the faucet.
The pump-type faucet drew water from the fresh water tank up to the faucet. This was required because the pop-up didn't have a water pump in the fresh water system (nor did it have a water heater). Of course, it didn't have a gray water holding tank, either (forget about a black tank), so the water system was pretty rudimentary.
If one were to install a standard faucet, it would work fine if there is provision to hook up to a pressurized water supply at the campground pedestal and have it provide the required water pressure. If, on the other hand, the pop-up can only draw water from the fresh water tank, there is no pressure to push the water to the faucet and no provision to manually pump the water up to the faucet since the new faucet eliminated that. If a standard faucet were to be installed in this instance, a water pump would have to be installed between the fresh water tank and the new standard faucet.
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