Guides

The parts a calculator can't do alone.

Most of this site is arithmetic, done from your rig's own numbers. These pages are the rest: where those numbers are printed on the rig and the truck, what a symptom is telling you before there's a number to type, and the checklists worth taping to a cabinet door. Each one links to the calculators it feeds.

Reference

Where the numbers live, and what they mean.

Find your RV's numbers Every label, plate and sticker the calculators ask about: where it is, what each line means, and which lines to ignore. Read the guide →

When something is wrong

From a symptom to the one cause behind it.

Why does my trailer sway? Tongue weight, speed, tires, hitch: a decision table built from readings you can take on your own rig. Read the guide →

Checklists

The order of operations, printable.

De-winterizing checklist The spring steps in order, the reverse of winterizing plus the sanitize. Printable. Read the guide →

In the works

Written as the calculators they feed ship. Nothing here is linked until it exists.

Breaker trips or the inverter shuts offWhich of the four usual causes you have, from what tripped and when.
Battery dies overnightThe furnace blower, the absorption fridge on 12 V and the parasitic draws, in order of likelihood.
Boondocking checklistBefore you leave the last spigot: water, power, propane, and the numbers to check. Printable.