How do you fit water tanks under a Nissan civilian camper bus?

To fit water tanks under a Nissan Civilian camper bus, first measure the available space beneath the vehicle to determine the appropriate tank size. Choose tanks that are low-profile and made from durable, lightweight materials to minimize weight. Secure the tanks using brackets or straps to ensure stability during transit, and ensure proper Plumbing connections for water supply and drainage. It's also important to consider accessibility for maintenance and filling.