I feel that the Explorist Life channel has good content for van builders. This video about their plumbing and water system is well done, but it has so many connections and took them a lot of hours to install. It helped confirm why I like to build things with simplicity. My plumbing/water system has two connections: one inside the tank where the pump is located and the other at the faucet. I lost count at the number of connections that Explorist Life created. Every connection has the potential for failure and plumbing leaks are likely in a van build.The next phase is the water system. I'm using this 22 gallon over the wheel well tank with this submersible pump and this faucet. When you turn on the faucet it activates power to the pump. The photo below shows my simple tank mounting. It will be secure, but easy to remove for cleaning. View attachment 86651