Cozy’s story did not begin with this family. Alan studied systems, kept careful records and engineered practical improvements. The next chapter carries that same curiosity into off-grid power, connected technology and family travel.
Before any of my changes, Cozy had already been thoughtfully modified. Alan’s work is grouped below by the part of the camper it improved, using the same simple format as my modifications later on the page.
Only confirmed work belongs in this list. Research stays in the private records unless we find proof that Alan actually installed it.
Everyday systems & storage
Detachable 30-amp shore-power inletAlan converted the original pull-out cord to a removable exterior connection for cleaner setup and easier service.
Automatic closet lightOpening the closet door turns on the light automatically. This was already part of Cozy at the 2019 handoff.
Purpose-built under-sink organizationAlan made the curved cabinet useful without blocking access to the plumbing and systems behind it.
Gray water & sanitation
Fast Gray drain upgradeThe gray-water outlet was reworked so the tank could empty faster with less restriction.
HepvO waterless shower trapThe original shower trap and manual valve were replaced with a compact waterless valve that prevents gray water from backing into the shower.
Gray-water vent conversionThe tank venting was improved to help the gray-water system drain and fill more effectively.
Front PVC sewer-hose carrierA dedicated tube across the front kept the sewer hose contained and outside the camper’s living and storage areas.
Running gear & exterior
Dexter axle and brake workReceipts from 2009 document left- and right-hand 10-inch brake assemblies, hardware and spindle-retaining parts.
Custom rear spare-tire carrierAlan’s sketches, measurements and photographs document the carrier Alan designed to keep the spare secure and accessible.
MAXXAIR Window/Maxx louverAlan added the black side-window louver so the window could stay partly open for ventilation while gaining protection from rain and weather.
Atwood stabilizer jacksThese were on Cozy at the handoff and match Alan’s retained service guide. Whether they were factory-installed or added later is still unknown.
Electrical & appliance systems
45-amp converter replacementAlan replaced Cozy’s converter after purchasing a 45-amp unit in November 2003, then kept the invoice, warranty and charging-system reference material together.
Warm-white LED lightingIn 2008, Alan installed three warm-white LED lamp assemblies—an unusually early efficiency upgrade that reduced 12-volt lighting demand without giving the interior a harsh blue-white glow.
Cooling-unit replacementIn 2012, Alan installed a $395 replacement cooling unit in Cozy’s Dometic refrigerator.
The mind behind the records
No stack of receipts can tell us everything about a person. But this archive does reveal consistent habits: careful measurement, practical curiosity, persistence and a strong sense of stewardship.
This is an evidence-based impression, not a claim about Alan’s private life. Every trait below is tied to something Alan chose to study, measure, build or preserve.
Alan preserved invoices, part numbers, diagrams, measurements and long troubleshooting threads instead of relying on memory.
The record follows real disassembly, wiring questions, current measurements, custom sketches and repeated repair attempts.
Batteries, 12-volt lighting, brakes, weight distribution, weather radios, plumbing and appliance theory all drew Alan’s attention.
Alan retained professional four-corner weighing, breakaway-switch instructions, brake setup notes and manufacturer procedures.
When the refrigerator repair failed on the first attempt, Alan measured, asked precise questions and kept working the problem.
The depth of the archive suggests Alan wanted the camper understood—not merely used—so the next caretaker could inherit its history.
One of the things I love most about discovering these records is realizing how much we have in common. Long before lithium batteries, Home Assistant dashboards and ESP32 sensors became part of Cozy, Alan was already studying batteries, 12-volt lighting, weather equipment, communications gear and better ways to make a small camper work.
Not every idea in Alan’s files became a modification, and the archive is careful about that distinction. But the research still matters because it reveals an instinct I recognize in myself: understand the system, save the documentation, test an idea and improve the camper one practical problem at a time.
When Cozy came to me in 2019, I was not trying to recreate Alan’s work. I simply kept following that same line of curiosity. Alan’s chapter left behind a replacement converter, warm-white LED lighting, thoughtful plumbing improvements, custom storage, practical hardware and an extraordinary technical record. Mine has grown into a 24-volt lithium and solar system, Home Assistant, ESP32 climate and leveling tools, connected weather data, travel Wi-Fi and a new generation of improvements built around our family.
The technology changed. The curiosity did not.
A replacement converter, warm-white LED lighting, weather and communications equipment, a detachable shore-power inlet, the Window/Maxx louver, the HepvO conversion, custom carriers and patient appliance diagnosis.
Lithium batteries, solar and alternator charging, Home Assistant, ESP32 controls, connected weather, travel Wi-Fi and systems that can be measured from a dashboard.
That is what makes Cozy’s history feel less like two separate ownership periods and more like one long conversation between two people who never expected to share the same little camper. Alan did not just leave behind a well-cared-for Casita. What Alan left was a starting point.
Cozy’s living timeline
Exact dates come from factory documents, invoices and service records. Broader periods are used where the archive proves the sequence but not a single installation day.
Factory records identify a 2002 17-foot Spirit Deluxe center-booth model with awning, sway bar, Fantastic vent and convenience packages. Sale price: $13,373.
Nine days after the Texas registration record, a dated photograph shows Cozy hitched to the original owners’ green pickup beneath mature trees. The location—and whether this was the first trip—remain open questions.
A weather-alert radio was purchased and carefully retained with its operating material—an early glimpse of the technology-minded camping style documented throughout the archive.
A Camping World invoice documents the 45-amp converter purchase, and the retained Parallax material preserves the technical context. The completed replacement is confirmed; the exact installed model still needs a label photograph.
RVSEF measured Cozy at 3,025 pounds loaded: 2,650 on the axle and 375 on the hitch, leaving 475 pounds below the 3,500-pound GVWR in that historical configuration.
Three 3100K warm-white LED arrays reduced lighting demand while preserving a comfortable interior color. A later 2014 lamp order remains documented as a purchase, not a confirmed installation.
Invoices document spindle retainers and left- and right-hand Dexter brake assemblies with hardware. The equipment now on Cozy supports that the planned work was completed.
The cooling unit was replaced, electrically tested and revisited when insulation and thermostat behavior created new questions. The paper trail preserves the whole problem-solving process.
A detachable shore-power inlet, Window/Maxx louver, rear spare carrier, front sewer-hose tube, Fast Gray drain, HepvO shower trap and gray-vent conversion, automatic closet light and careful storage solutions were all part of Cozy by the handoff.
After nearly eighteen years with her original owners, Cozy passed to a family ready to preserve the good ideas already aboard and keep the adventures going.
Laminate flooring, blue textiles, blackout curtains, a television, forest details and practical campsite upgrades turned a well-kept original interior into a personal family space.
During COVID, Cozy stayed parked in the driveway and became my daily office. I went out to work inside her each day—a more businesslike version of the camper that proved how useful her small, separate space could be even when we were not traveling.
A forest-and-mountain duvet cover, coordinated pillows, artwork and other Etsy-sourced details gave Cozy the warm, personal character that still defines her interior today.
Four Renogy LiFePO₄ batteries form a 25.6-volt, 600Ah bank with 15.36 kWh of nominal storage. A Victron MultiPlus 24/3000 and Orion XS alternator charger added serious off-grid capacity while preserving Cozy’s original 12-volt systems.
Eight 100-watt CalSun panels—four on each side of the roof—feed a Victron SmartSolar MPPT 100/50, giving Cozy 800 watts of roof-mounted solar generation.
My modifications · Since 2019
Everything below came after the handoff. Some changes reshape how Cozy looks, while others improve a task that happens every day at camp. Together they continue the practical, technology-minded foundation that was already aboard.
Arrival & stability
Powered tongue jackTakes the strain out of hitching, unhitching and front-to-back leveling.
Four scissor stabilizer jacksSteady the shell after setup so the interior feels planted while the family moves around.
Reflective grip tapeAdds traction to the entrance steps and makes their edges easier to see after dark.
Keyless entryMakes it easier to get inside without searching for a key while carrying gear or helping the boys.
Door window with integrated blindsBrings light into the entry while keeping privacy and light control close at hand.
Kitchen & water
Tankless water heaterProduces hot water as it is needed instead of waiting on a small storage tank to reheat.
Under-sink water filterFilters the kitchenette water at the point of use while staying tucked beneath the sink.
Deep sinkHandles family dishes and campsite cleanup more comfortably than the original shallow basin.
BacksplashProtects the work area and gives the kitchen a cleaner, more finished look.
Bamboo stovetop coverA bamboo cutting board rests upside down over the stovetop to create a sturdy little prep area.
Larger dinette tableA roomier, nicer tabletop gives meals, games, schoolwork and trip planning the space they deserve.
Interior & storage
Laminate flooringReplaced the carpet with a more modern surface that is easier to clean after camping with children.
Dimmable LED light fixturesThe original fixtures were replaced with efficient LEDs that can be dimmed and shifted between warmer and cooler light temperatures—one of the family’s favorite upgrades.
Katy’s Casita Closets systemA popular Casita upgrade that turns the tall closet into far more organized, accessible storage.
Custom cushion coversBrought durable blue upholstery and a coordinated mountain-and-forest palette to the dinette.
Blackout curtainsAdd privacy and help everyone sleep when campground lights stay on or summer mornings arrive early.
Bed-area privacy curtainA rod spans the width of Cozy so a curtain can separate the bed from the rest of the camper when someone is sleeping.
TelevisionMakes room for family movies, rainy evenings and a familiar wind-down routine on the road.
Texas adventure mapCollects a new pin with every park, turning Cozy’s wall into a growing record of family travel.
Bathroom wall decalsLayered blue and gray evergreen decals turn the wet bath walls into a playful little forest.
Bamboo shower matAdds a warmer, more finished surface underfoot while keeping the compact wet bath practical.
Bathroom finishing touchesDark accents, small shelves and faux plants carry the mountain-and-forest theme into the smallest room.
Etsy-sourced interior detailsCollected artwork and coordinated accents from independent makers helped the blue forest-and-mountain style take shape gradually.
Electronics & connectivity
USB and USB-C receptaclesUpdated wall outlets put current charging connections within reach for phones, tablets and campsite electronics.
12V socket replacementsInterior cigarette-lighter-style connections were replaced with dedicated USB and USB-C charging points.
Home Assistant hubA dedicated local server brings Cozy’s sensors, equipment, dashboards and useful automations together in one connected system.
ESP32 smart thermostat · FrostyA dedicated ESP32-based thermostat connects Cozy’s climate controls to Home Assistant and gives the heating and cooling system its friendly Frosty dashboard.
ESP32 inclinometer and auto-leveler · TiltyA separate ESP32 inclinometer measures Cozy’s pitch and roll, then turns those readings into the Tilty leveling view for faster, more precise campsite setup.
Ecowitt Wittboy GW3001 weather stationThe outdoor sensor and Wi-Fi hub add campsite weather, temperature, humidity, wind and rainfall data to Cozy’s connected view.
GL.iNet Slate AX travel routerThe compact GL-AXT1800 Wi-Fi 6 router creates one familiar network for Cozy’s devices, whether the internet source is Starlink, campground Wi-Fi or another connection.
Starlink internetA campsite connection supports streaming, weather checks, remote monitoring and the connected systems that make Cozy easier to understand.
Dedicated dashboard tabletsPermanent screens provide simple access to Sparky, Tilty, Victron information and the rest of Cozy’s Home Assistant controls.
Wireless backup cameraA rear camera improves visibility while backing into campsites and helps monitor the space behind Cozy while traveling.
One coordinated home
The best modifications disappear into the trip: a stable step, a charger in reach, a brighter closet, a better place to prep dinner. The color, art and family details make those practical changes feel unmistakably like Cozy.
See Cozy out in the worldCommunity project library
Every project in Greg Zimmerman’s DIY index is cataloged here and in the searchable Owner’s Library. These are third-party, Casita-focused source links—not universal instructions—so match the project to your exact trailer, equipment and skill level before buying parts or drilling fiberglass.
Search every Handy Camper project in the library →Electrical modifications
Exterior modifications
Interior modifications
Running gear modifications
Plumbing modifications
HVAC modifications
Project titles and links are credited to The Handy Camper’s D.I.Y. Projects index.
Still evolving
Every new scan can add a date, part number, repair, trip or design decision. The goal is a complete, honest history: who changed what, why it mattered, what the evidence proves and how each idea carried Cozy into the next chapter.
