"There is an adapter that will
"There is an adapter that will fit into the water intake hole in the gimbal housing.
check with your dealer.
Alternativly you can hook your water supply directly into the raw water inlet to the T'stat housing, though you will have to do some plumbing gymnastics to hook it up.
Watch how much pressure you apply. Cooling systems run at only a few pounds, even closed systems. Since your leg is not going to be pumping water, turn the water on first and adjust the flow so you have a decent stream coming out the exhaust opening in the gimbal, or the water outlet ports.
Rod"