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Four-Season Sprinter 170 — Example Plan

Sprinter · 170 · High roof · Full-time living · four-season

Components

14

Estimated cost

$9,248

26% of $35,000 target

Printed

Sep 16, 2026

Budget

Planned prices and allowances only. Any purchased subtotal below uses planned prices, not actual spending or receipts.

Components

$9,248

$3,611 purchased

Honest plan

$15,373

+ materials, small parts, tools

With 20% contingency

$18,448

builders recommend 10–30%

Target

$35,000

$19,627 headroom

By category — purchased vs planned

Electrical
$2,283 / $4,572
Climate Control
$379 / $1,674
Kitchen
$949 / $1,068
Storage
$0 / $780
Plumbing
$0 / $704
Sleeping
$0 / $450

Not itemized yet — but every real build pays it

  • Build materials (full-featured preset)lumber, ply, insulation, flooring, bed & cabinet structure — from itemized real builds$4,500
  • Consumables & small parts (10% of components)fasteners, adhesives, sealant, connectors, blades — measured 4–17% of real builds$925
  • Tools (first-time builder)measured $390–$1,070 in tracked builds — reduce if you already own tools$700

Measured spatial plan

Dimensional top-down van layoutCab / cargoCab / cargo boundary: Orientation landmark at the sourced cargo-floor origin. It is context, not an invented cab intrusion.1710 mm display span. sourced geometry. Context only.Passenger sliding doorPassenger sliding door clear opening: Protected factory opening. The fit engine keeps this exact profile geometry clear.450 mm display span. sourced geometry. Included in fit rules.Rear doorsRear doors clear opening: Protected factory opening. The fit engine keeps this exact profile geometry clear.1549 mm display span. sourced geometry. Included in fit rules.~ Driver wheel wellDriver rear wheelhouse: Modeled wheel-well volume. Placed bodies and operating clearances are checked against it.450 mm display span. estimated geometry. Included in fit rules.~ Passenger wheel wellPassenger rear wheelhouse: Modeled wheel-well volume. Placed bodies and operating clearances are checked against it.450 mm display span. estimated geometry. Included in fit rules.Driver-side galleyWet bathPassenger benchDometic CFX3 55IMRear gear garage200Ah battery bankFresh-water tankFixed queen platformUsable cargo lengthVEHICLE TIER B · OEM DIMENSIONS WITH MODELED CONTOURSCyan = protected opening · Violet = user measured · Slate = obstruction · Dashed = estimated · Hidden layers keep fit rulesCAB / FRONTREAR DOORS
Four-season main plan · revision 1 · 8 placed14 verification items

Fit claims use the active vehicle profile, installed finish build-up, component dimensions, operating envelopes, and their recorded tolerances. Open the planner for issue evidence and explicit fixes.

Weight & payload

2019–2026 Mercedes-Benz Sprinter Cargo 2500 170 High Roof — 3,814 lb payload

-736 lb–1,158 lb remaining

OEM profile + estimated curb weight · likely payload 3,414 lb–4,064 lb · planning weight band 2,906 lb–4,150 lb

Axle conclusion unavailable until front/rear GAWR and empty front/rear scale weights are entered.

To improve confidence

  • Enter GVWR, front GAWR, and rear GAWR from this van’s certification label.
  • Weigh the empty van by axle before relying on axle margins.
  • Place 10 weighted line items (797 lb total) before relying on axle margins.
  • Replace estimated component, materials, occupant, and gear weights with measured values; the displayed planning band applies ±20% to estimated lines.
Components 336 lbWater 202 lbBuild materials 2,090 lbPeople & gear 900 lbProjected loaded range: 7,892 lb–9,786 lb of 9,050 lb GVWR

Where the weight sits (from placed spatial nodes)

Front 718 lbMid 883 lbRear 1,130 lb (41%)

797 lb is not spatially placed: Victron MultiPlus 12/2000 Inverter/Charger, 3× Renogy 200W Rigid Panels (600W array), MaxxAir MaxxFan Deluxe 7500K, Espar Airtronic S2 D2L Diesel Heater, Shurflo 4008 Revolution Water Pump, Victron SmartSolar MPPT 100/50, Victron Orion XS 50A DC-DC Charger, Duxtop 9600LS Induction Cooktop, Camplux 12V 2.6 gal Water Heater, Gear & supplies (2 × 300 lb). This weight is excluded from directional and axle claims, not silently assigned to a guessed zone.

  • GVWR is manufacturer-sourced, but curb weight is a planning estimate that varies by options. Confirm the door placard and weigh the empty van before final sign-off. Use the individual door-jamb certification/tire labels as the final GVWR/GAWR authority. Published drawing dimensions are subject to OEM tolerance and do not include conversion finishes.
  • Payload margin is not established: the current planning range runs from -736 to 1,158 lb remaining. Verify weights before committing.
  • The buildout alone uses ~64% of payload — that leaves under ~1,000 lb for people, water, and gear (experienced builders' floor).
Full weight breakdown (18 lines)
2× Battle Born 100Ah LiFePO4 (200Ah bank)62 lbfrom product specs
Victron MultiPlus 12/2000 Inverter/Charger25 lbfrom product specs
3× Renogy 200W Rigid Panels (600W array)86 lbfrom product specs
Dometic CFX3 55IM Fridge/Freezer47 lbfrom product specs
MaxxAir MaxxFan Deluxe 7500K16 lbfrom product specs
Espar Airtronic S2 D2L Diesel Heaterest18 lbunit + kit + ducting
Shurflo 4008 Revolution Water Pump4 lbfrom product specs
Victron SmartSolar MPPT 100/503 lbfrom product specs
Victron Orion XS 50A DC-DC Chargerest15 lbweight unavailable; 15 lb planning allowance
Duxtop 9600LS Induction Cooktopest15 lbweight unavailable; 15 lb planning allowance
30 gal Fresh + 22 gal Grey Poly Tanksest15 lbweight unavailable; 15 lb planning allowance
Camplux 12V 2.6 gal Water Heaterest15 lbweight unavailable; 15 lb planning allowance
Fixed Queen Platform (rear, over garage)est15 lbweight unavailable; 15 lb planning allowance
Fresh water, full (21 gal)176 lb8.34 lb/gal — RVIA counts fresh full
Water tanks (empty shells)est26 lb~0.7 lb per gal capacity, fresh + grey
Build materials (full-featured preset)est2,090 lbinsulation, floor, paneling, framing, cabinetry, bed — measured-build anchors; includes 1 selected structural item(s), not counted again
People (2 × 150 lb)est300 lbFMVSS designated-seat assumption
Gear & supplies (2 × 300 lb)est600 lbfull-time allowance (measured builds carry more)

Wiring & electrical BOM

Planning estimate12V DC preliminary · 0/13 cable runs measured
Modular 12V system — 200Ah · 600W solar · 2000W inverter10 AWG — Array current ×1.25 (NEC 690.8 practice) at ~36V nominal, 3% drop over the 20 ft roof run.10 AWG8 AWG · 70A MRBF — Controller output 50A; fuse at 125% (70A) within 7" of the bus.8 AWG · 70A MRBF2/0 AWG · 70A MRBF — Victron Orion XS 50A DC-DC Charger input side (~60A) over the 25 ft cab run; generic voltage-drop/ampacity sizing with a 70A planning fuse. The selected charger's manual remains controlling.2/0 AWG · 70A MRBF8 AWG · 70A MRBF — Charger output 50A to the bus; fused at 70A.8 AWG · 70A MRBF2/0 AWG · 250A Class T — Main battery cables sized to the largest load (2000W inverter ≈ 167A). Class T 250A within 7" of the battery + terminal — 20kA AIC is the LiFePO4-safe choice (ANL is not).2/0 AWG · 250A Class T2/0 AWG — 2000W @ 12V ≈ 167A continuous — 2/0 AWG per EXPLORIST.life/Victron sizing; protected by the Class T main.2/0 AWG8 AWG · 60A MRBF — Feeder for 6 branch circuits totaling ~41.5A; fused 60A (block max 100A).8 AWG · 60A MRBF12 AWG · 15A blade — 9A continuous load, 3% drop (critical) over ~8 ft; 15A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.12 AWG · 15A blade14 AWG · 10A blade — 5A continuous load, 10% drop acceptable (non-critical) over ~16 ft; 10A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.14 AWG · 10A blade14 AWG · 10A blade — 3A continuous load, 10% drop acceptable (non-critical) over ~16 ft; 10A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.14 AWG · 10A blade14 AWG · 15A blade — 5A load, 10% drop acceptable (non-critical) over ~16 ft; 15A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.14 AWG · 15A blade14 AWG · 10A blade — 7.5A load, 3% drop (critical) over ~8 ft; 10A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.14 AWG · 10A blade12 AWG · 20A blade — 12A load, 3% drop (critical) over ~8 ft; 20A blade fuse per manufacturer guidance. 14 AWG minimum on branch circuits by convention.12 AWG · 20A blade2× Battle Born 100Ah LiFe…200Ah @ 12V2× Battle Born 100Ah LiFePO4 (200Ah bank)Bus bars (+/−)or Lynx DistributorBus bars (+/−)3× Renogy 200W Rigid Pane…600W on the roof3× Renogy 200W Rigid Panels (600W array)Vehicle alternatorstarter battery / CCPVehicle alternatorVictron SmartSolar MPPT 1…50A planning output classVictron SmartSolar MPPT 100/50Victron Orion XS 50A DC-D…Victron Orion XS 50A DC-DC ChargerVictron MultiPlus 12/2000…2000W → 120V ACVictron MultiPlus 12/2000 Inverter/Charger12V fuse block12-circuit, 100A max12V fuse blockDometic CFX3 55IM Fridge/…9ADometic CFX3 55IM Fridge/FreezerMaxxAir MaxxFan Deluxe 75…5AMaxxAir MaxxFan Deluxe 7500KLED lighting circuit3ALED lighting circuitUSB / 12V outlets5AUSB / 12V outletsShurflo 4008 Revolution W…7.5AShurflo 4008 Revolution Water PumpEspar Airtronic S2 D2L Di…12AEspar Airtronic S2 D2L Diesel Heater

Preliminary 12V DC schematic generated from versioned sizing rules (3% voltage drop on critical runs, fuses at 125% of load, wire ampacity ≥ fuse) — see the per-run notes for reasoning. Verify against your components' manuals before building; this is a planning aid, not a certified electrical design.

Required before installation

  • Measure one-way cable routes before purchasing wire.
  • Confirm each selected battery, inverter, charger, controller, and load against its manufacturer manual.
  • Have the final installation reviewed and tested by a qualified RV/marine electrical professional.

Professional review domains

120V AC shore power and transfer switching · neutral-ground bonding and grounding · fuel, propane, and structural penetrations

Check before you buy

  • Selected battery capacity (200Ah) is below the 500Ah planning requirement. The wiring diagram uses the selected bank; autonomy will be lower.
  • Selected solar array (600W) is below the 1000W planning requirement. The wiring diagram uses the selected array; recharge time will be longer.
  • Selected DC-DC charger manual limits are incomplete. Its current, cable, and fuse result remains a planning class until normalized manual claims are confirmed.
  • PV topology/manual data is incomplete (cold Voc, array Isc, and controller limits). Solar wire sizing is a planning placeholder, not an installation-ready result.
  • Battery BMS max discharge data is missing. Confirm it can continuously supply the 167A inverter load; bank amp-hours alone do not prove this.
  • Chassis ground: run the negative bus to a factory chassis point with cable equal to (or one size below) your largest battery cable — community consensus sizing, verify against your chassis manual.

Wire

  • 14 AWG tinned marine wire (red + black)

    105°C insulation

    Quantity
    2 × 70 ft
    Notes
    includes ~20% routing slack

  • 2/0 AWG tinned marine wire (red + black)

    105°C insulation

    Quantity
    2 × 40 ft
    Notes
    includes ~20% routing slack

  • 10 AWG tinned marine wire (red + black)

    105°C insulation

    Quantity
    2 × 25 ft
    Notes
    includes ~20% routing slack

  • 8 AWG tinned marine wire (red + black)

    105°C insulation

    Quantity
    2 × 20 ft
    Notes
    includes ~20% routing slack

  • 12 AWG tinned marine wire (red + black)

    105°C insulation

    Quantity
    2 × 20 ft
    Notes
    includes ~20% routing slack

Fuses & protection

  • 70A MRBF fuse + holder

    Quantity
    1
    Notes
    mppt → busbar

  • 70A MRBF fuse + holder

    Quantity
    1
    Notes
    alternator → dcdc

  • 70A MRBF fuse + holder

    Quantity
    1
    Notes
    dcdc → busbar

  • 250A Class T fuse + holder

    Quantity
    1
    Notes
    battery → busbar

  • 60A MRBF fuse + holder

    Quantity
    1
    Notes
    busbar → fuse-panel

  • 15A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-fridge

  • 10A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-fan

  • 10A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-lights

  • 15A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-outlets

  • 10A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-pump

  • 20A blade fuse

    Quantity
    1
    Notes
    fuse-panel → load-heater

Distribution

  • Bus bar pair (+/−) or Victron Lynx Distributor

    rated ≥ main fuse

    Quantity
    1

  • 12-circuit fuse block with negative bus

    100A max

    Quantity
    1

Lugs & termination

  • Chassis ground cable + lug

    Quantity
    1
    Notes
    equal or one size below largest battery cable; bare-metal contact point

  • Tinned copper lugs (match gauge × stud: 3/8" mains, 5/16" holders, 1/4" fuse block)

    Quantity
    24
    Notes
    one per cable end, red/black adhesive heat shrink each

  • Adhesive-lined heat shrink, red + black assortment

    Quantity
    1 kit

Monitoring & switching

  • Battery disconnect switch (main positive)

    rated ≥ max continuous current

    Quantity
    1

  • Battery monitor shunt (main negative)

    Quantity
    1
    Notes
    ALL loads + chassis ground land on the load side

Hardware & misc

  • MC4 connector pairs + roof cable gland

    Quantity
    1 set

  • Wire loom / sheathing + cable clamps (every 18")

    Quantity
    per run layout
    Notes
    sheathing unlocks the 40"/72" fuse-distance allowances

Component planning checklist

This is a planning checklist, not a ready-to-buy shopping list. Selection, evidence review, purchase, and installation are separate. Owner-reported reviews and progress are not engineering certification. Recheck current readiness in the build before buying or installing. Prices shown are planned estimates, not actual spending. Private orders, receipts, documents, and notes are omitted.

This build uses earlier planning records. Purchase readiness and evidence review have not been established in this export.

  • 2× Battle Born 100Ah LiFePO4 (200Ah bank)

    $1,898 planned

    Saved planning item · quantity and readiness not established

    Purchased · owner-reported legacy status, not verified

  • Victron MultiPlus 12/2000 Inverter/Charger

    $1,150 planned

    Saved planning item · quantity and readiness not established

  • 3× Renogy 200W Rigid Panels (600W array)

    $810 planned

    Saved planning item · quantity and readiness not established

  • Victron SmartSolar MPPT 100/50

    $385 planned

    Saved planning item · quantity and readiness not established

    Purchased · owner-reported legacy status, not verified

  • Victron Orion XS 50A DC-DC Charger

    $329 planned

    Saved planning item · quantity and readiness not established

  • Dometic CFX3 55IM Fridge/Freezer

    $949 planned

    Saved planning item · quantity and readiness not established

    Purchased · owner-reported legacy status, not verified

  • Duxtop 9600LS Induction Cooktop

    $119 planned

    Saved planning item · quantity and readiness not established

  • MaxxAir MaxxFan Deluxe 7500K

    $379 planned

    Saved planning item · quantity and readiness not established

    Purchased · owner-reported legacy status, not verified

  • Espar Airtronic S2 D2L Diesel Heater

    $1,295 planned

    Saved planning item · quantity and readiness not established

  • Shurflo 4008 Revolution Water Pump

    $95 planned

    Saved planning item · quantity and readiness not established

  • 30 gal Fresh + 22 gal Grey Poly Tanks

    $340 planned

    Saved planning item · quantity and readiness not established

  • Camplux 12V 2.6 gal Water Heater

    $269 planned

    Saved planning item · quantity and readiness not established

  • Fixed Queen Platform (rear, over garage)

    $450 planned

    Saved planning item · quantity and readiness not established

  • Galley Cabinet Run (driver side)

    $780 planned

    Saved planning item · quantity and readiness not established

Known planned item cost: $9,248

Build sequence — ~89h DIY over ~7.5 weeks

1. Penetrations & Roof Hardware~12h DIY

  • Roof-mount solar panels + seal corner brackets — 4h · Skilled DIYtools: Cordless drill, Butyl tape, Dicor self-leveling lap sealant
  • Cut, mount, and seal roof ventilation fan — 3h · Skilled DIYtools: Hole saw, Jigsaw, Butyl tape, Dicor lap sealant
  • Cut heater intake + exhaust holes through van floor — 2h · Skilled DIYtools: Hole saw, Jigsaw, Sealant
  • Install grey water tank + drain line through floor — 3h · Skilled DIYtools: Hole saw, Drill, Drain fittings

2. Rough-in (Electrical · Plumbing · Heater fuel)~19h DIY

  • Install solar entry gland + run cables to charge controller location — 3h · Skilled DIYtools: MC4 crimper, Hole saw, Wire fish
  • Mount DC-DC charger + wire alternator → house battery — 6h · Skilled DIYtools: Cable crimper, Multimeter, Cable lugs, In-line fuses
  • Wire vent fan to 12V switch — 1h · DIY OKtools: Crimper, Wire strippers
  • Drop fuel tank + install standpipe pickup — 5h · Pro Recommendedtools: Jack, Transmission jack, Fuel-resistant gloves
  • Run PEX/PE-X supply lines from tank to fixtures (rough-in) — 4h · DIY OKtools: PEX crimp tool, Tubing cutter

3. Cabinetry & Major Systems Install~56h DIY

  • Mount inverter/charger + AC distribution wiring — 4h · Pro Recommendedtools: Heavy-cable crimper, AC outlet tester, GFCI panel
  • Mount MPPT charge controller + wire to battery bank — 2h · Skilled DIYtools: Multimeter, Crimper, Phone for Victron Connect commissioning
  • Mount fridge in cabinet cavity + wire to fuse panel — 3h · DIY OKtools: Drill, Crimper, Mounting brackets
  • Cut counter opening + drop in cooktop + connect — 3h · Skilled DIYtools: Jigsaw, Tape measure, Sealant
  • Mount heater unit + route ducting + run fuel line — 6h · Skilled DIYtools: Drill, Tubing cutter, Line clamps
  • Mount pump + accumulator + final hookup — 2h · DIY OKtools: Adjustable wrench, PEX crimper
  • Build bed frame / platform — 15.6h · Skilled DIYtools: Circular saw or track saw, Drill, Pocket hole jig, Sander
  • Build and mount Galley Cabinet Run (driver side) — 20.8h · Skilled DIYtools: Track saw, Drill, Pocket hole jig, Sander
  • Add active cooling (no AC unit picked yet — hot climate selected) — 0h · Skilled DIY

4. Finishes & Commissioning~2h DIY

  • Wire thermostat + prime fuel pump + commissioning — 1h · DIY OKtools: Heater controller, Multimeter
  • Cut mattress to fit + install bedding — 1h · DIY OKtools: Sharp knife or electric carving knife