I took some pictures of the bypass hardware I added, so here they are.
The bypass kit installed. It consists of two T-valves and a hose in-between. The plastic water tank (donated from a Winnebago) is on the left, the blue pressure accumulator (1.5 gallon) is on the lower right. If you don't have an accumulator, I suggest you get one. Could keep you from waking someone at night.
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One of the two valves in bypass mode. The lever points to the direction of fluid flow.
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The two kits I purchased. In addition to the bypass kit on the right, I bought a kit to allow the antifreeze to be pumped in. It has another T-valve, a coupler, and hose with cap for the valve for when not in use.
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This is the valve and connection for the antifreeze suction hose. It is tucked in-between the four deep-cycle batteries, water pump, accumulator, strainer, etc.