2000 Ford E-450, 7.3L Powerstroke — Every Part I Actually Used

The array is two separate systems, not one. The original 2×100W Renogy panels run their own Renogy charge controller. When I added the 2×250W SanTan panels, I put them on their own PowMr 60A MPPT instead of trying to merge everything into one controller — simpler wiring, and if one array or controller ever fails the other keeps making power. 700W combined feeds the 280Ah bank below.

One 280Ah LiFePO4 bank runs everything — fridge, lights, water pump, USB/12V outlets, the diesel heater's electronics. Shore power comes in through the converter when I'm plugged into a pedestal; the alternator tops it off through the DC-DC charger while driving. Everything downstream of the bank is 12V wiring, a switch panel, and a lot of crimped lugs.

Two heat sources: a diesel air heater for parking/boondocking, and the whole-house propane furnace that came with the Prowler donor. The Maxxfan and roof vent fan move air in and out — the Maxxfan runs even in light rain, which is the whole reason it's up there instead of a cheaper fan. Tank heater pads and heat tape keep the water system from freezing in cold-weather stops.

40 gallons fresh, 27 gray, 27 black. The fresh side runs through a strainer before the pump to keep grit out, then to the kitchen faucet and shower valve. On the waste side, the black tank empties through a tote tank I wheel to the dump when I'm parked somewhere for a while, instead of moving the whole rig.

The roof gets a silicone coating over it and self-leveling sealant on every seam — vents, the Maxxfan, the AC curb — plus tape for quick patches between full reseals. R8 foil insulation cut down for the windows handles radiant heat on hot stops, and a bed-liner spray finish on the exterior panels hides dings and sheds road grime.

A camper conversion adds a lot of weight over stock, so the front-end steering and suspension parts got replaced rather than left original at 140k+ miles: shocks, steering damper, stabilizer link, tie rod end, and the radius arm bracket. Lug nuts sized for the 17" 8-lug wheel simulators finish out the rolling stock.

The 7.3L is the reason I bought this specific rig — old enough to be simple, no modern emissions plumbing to fail. The maintenance side is straightforward parts: water pump, air filter, glow-plug harness, up-pipes, fuel pickup screen, and a diesel-specific filter kit. Two transmission coolers are in this build — a direct-fit auxiliary cooler and a heavier 40k-GVW kit — because towing weight and mountain grades are what actually kill a 7.3L's transmission.

The stove is the one thing salvaged straight off the Prowler donor and it's still running. Everything else in the cabin is new: dimmable LED ceiling lights and puck lights over the galley on a touch dimmer, drawer slides on the storage, and a paint refinisher for the vinyl and plastic trim. Up front, the tail lights and fog bulbs are LED upgrades over stock, and the headlight bulbs are the one item here where the housing itself is a separate eBay find, not Amazon.

For the times solar and the battery bank aren't enough — cloudy stretches, or running something heavier than the inverter likes — there's a backup generator. Shade cloth cuts direct sun on hot stops. The signal booster and the rest of the work-from-the-road gear moved to the remote work gear.

I work from the rig. The whole office is four things: a stand that turns any picnic table into a desk, a booster that makes one bar usable, a phone plan with a hotspot, and enough USB power that nothing dies mid-call. The laptop itself runs off the inverter and the 280Ah bank, with the generator as the backup.

Lodging is the line item that actually changes the math on full-time travel. I used to pay $800/mo in rent; now it's $0 most nights, split between free dispersed boondocking spots and a Harvest Hosts membership that gets me overnight parking at wineries, farms and breweries. Fuel runs about $400/mo on the 7.3L, data is $45/mo for the Visible Wireless unlimited hotspot plan, and I budget about $100/mo for maintenance.