Measure the Exact Transit
Do not design around generic dimensions alone. Door openings, wheel wells, ribs, floor contours and factory options affect the usable space and mounting locations.
Use the Layout to Define System Locations
Place the bed, galley and seating first, then reserve realistic volumes for batteries, water, refrigerator, heater and ventilation. Systems should not be squeezed into whatever space remains.
Plan Wall Thickness Before Bed Orientation
Insulation, furring and finished wall panels reduce interior width. If sleeping sideways is important, model the finished dimension rather than the bare-metal width.
Keep Charging and Power Strategy Flexible
Transit owners may combine solar, shore power and vehicle-based charging. Component selection must match the battery chemistry and the vehicle’s electrical characteristics.
Protect Service Access
Leave removable panels around pumps, fuses, battery terminals, electrical distribution and plumbing connections. Convenience during construction should not create a maintenance problem later.
Test Before Final Trim
Drive the partially completed van, listen for movement, check latches, test water and electrical systems, and inspect roof penetrations before decorative trim makes corrections slower.
Turn the research into a build plan
The free guides on this site explain individual decisions. The Van Conversion Manual is designed to keep the major systems organized in one complete digital reference for the project.