Converting a cargo trailer into a camper is a popular DIY project, but the success of your build depends heavily on the conversion kit you choose. We researched and compared seven of the best kits on the market, evaluating them against manufacturer specifications, industry standards for RV systems, and aggregated owner feedback from forums and review sites. Whether you need a simple insulation and window kit or a complete electrical and plumbing system, this guide will help you pick the right solution for your trailer and budget.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Forest River Stealth Cargo Trailer Conversion Kit Best All-in-One Kit Includes insulation, wiring harness, roof vent, and window kit for 6×12 trailers |
9.2 | 🛒 Check Price |
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Cargo Gear Camper Conversion Kit 6×12 Best Value Kit Includes insulation, wiring, roof vent, and window kit for 6×12 trailers |
8.7 | 🛒 Check Price |
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Trailer Conversion Kit by Pro-Tecta Best for Electrical Systems Focus on electrical: 30A shore power inlet, converter, and distribution panel |
8.4 | 🛒 Check Price |
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Northstar Trailer Insulation and Window Kit Best Insulation Package R-10 rigid foam insulation with vapor barrier and two windows |
8.1 | 🛒 Check Price |
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RV Cargo Conversion Kit by Venture RV Best for DIY Beginners Basic kit: insulation, wiring, and roof vent for 5×8 trailers |
7.8 | 🛒 Check Price |
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Cargo Trailer Pro Complete Conversion Kit Most Comprehensive Kit Includes insulation, wiring, windows, vent, and water system for 7×14 trailers |
7.3 | 🛒 Check Price |
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EZ Cargo Camper Kit 8.5×20 Best for Large Trailers Designed for 8.5×20 trailers: insulation, wiring, two vents, three windows |
7.0 | 🛒 Check Price |
1. Forest River Stealth Cargo Trailer Conversion Kit: Best All-in-One Kit
The Forest River Stealth kit is designed specifically for the Stealth cargo trailer line, making installation straightforward for owners of those trailers. In our evaluation, the pre-wired harness and included insulation significantly cut down on the time needed to get a basic camper setup running. Owner feedback highlights that the wiring diagram is clear and the components meet RV electrical standards. However, the kit is not universal, so owners of other trailer brands will need to adapt or look elsewhere.
Who should skip this: If you own a trailer from a different manufacturer, or if you want a more customizable kit, this may not be the best fit. The kit also lacks plumbing components, so you will need to source those separately for a full camper conversion.
- Pre-wired electrical harness with fuse panel and battery connections
- R-7 foam board insulation and reflective bubble wrap included
- Comes with a 12V roof vent and two sliding windows with screens
Pros: Comprehensive kit reduces guesswork; High-quality insulation and wiring components
Cons: Only fits specific Stealth model trailers
2. Cargo Gear Camper Conversion Kit 6×12: Best Value Kit
The Cargo Gear kit offers a solid balance of features and cost, making it a popular choice among budget-conscious builders. We researched owner reports and found that the wiring kit is reliable and the vent works well. The insulation, while adequate for moderate climates, may not be sufficient for extreme cold or heat. Many users add additional insulation layers themselves.
Who should skip this: If you plan to camp in very cold or hot weather, you may need a thicker insulation kit or plan to supplement. Also, the kit does not include any plumbing or water system components.
- 1 inch foil-faced foam board insulation with adhesive
- 12V wiring kit with fuse block and LED light fixtures
- Roof vent with manual crank and two RV windows with screens
Pros: Affordable price for the components included; Good instructions for first-time builders
Cons: Insulation is thinner than some competitors
3. Trailer Conversion Kit by Pro-Tecta: Best for Electrical Systems
Pro-Tecta’s kit is for those who already have insulation and windows but need a reliable electrical backbone. We compared its converter and panel to industry standards and found them to be well-built and safe. Owner feedback indicates that the installation is straightforward for someone comfortable with wiring, but novices may find it challenging. The kit does not include a battery or solar components.
Who should skip this: If you need a complete conversion from scratch, this kit alone won’t get you there. It’s best for builders who want to upgrade or replace an existing electrical system.
- 30 amp RV power converter with built-in battery charger
- Pre-wired distribution panel with 110V and 12V breakers
- Includes exterior shore power inlet and interior outlets
Pros: High-quality electrical components; Clear labeling and wiring diagram
Cons: No insulation or windows included; Requires basic electrical knowledge
4. Northstar Trailer Insulation and Window Kit: Best Insulation Package
Northstar focuses on the most critical part of any camper conversion: insulation. In our research, the R-10 foam provides superior temperature control compared to thinner options. Owners in cold climates report that this kit, combined with a small heater, keeps the trailer comfortable. However, the kit is limited to insulation and windows, so you will need to purchase electrical, vent, and plumbing components separately.
Who should skip this: If you want a single kit that covers everything, this is not it. It’s ideal for those who plan to build out the rest themselves and prioritize thermal efficiency.
- 2 inch thick XPS foam board with reflective vapor barrier
- Two 14×22 inch RV windows with screens and tinted glass
- Adhesive and sealing tape included
Pros: Excellent thermal performance; Windows are well-sealed and easy to install
Cons: No electrical or vent components; Foam boards may need cutting to fit odd trailer dimensions
5. RV Cargo Conversion Kit by Venture RV: Best for DIY Beginners
Venture RV’s kit is designed for small trailers and first-time converters. The insulation is minimal, so it’s best for mild weather or short trips. Owner feedback suggests that the wiring kit works fine for a few lights but cannot support larger appliances. The roof vent is functional but lacks a fan.
Who should skip this: If you plan to camp in extreme temperatures or need a full electrical system, look for a more comprehensive kit. This is strictly for a very basic conversion.
- 1/2 inch foam insulation with adhesive backing
- Simple 12V wiring kit with two LED lights and switch
- Manual roof vent with built-in screen
Pros: Very affordable entry point; Good instructions for absolute beginners
Cons: Thin insulation limits climate control; Wiring kit is basic and not expandable
6. Cargo Trailer Pro Complete Conversion Kit: Most Comprehensive Kit
While this kit promises a complete conversion, our research found mixed owner experiences. The electrical system works adequately, but the water pump and fittings are prone to leaks. Many users reported missing screws and unclear instructions. The insulation is decent, but the overall build quality does not match the price.
Who should skip this: If you value reliability and ease of installation, consider purchasing components separately. This kit may be frustrating for those who want a turnkey solution.
- 1 inch foam insulation and vapor barrier
- 12V/110V electrical system with converter and outlets
- Water system: 10 gallon tank, pump, and sink faucet
Pros: All-in-one solution saves sourcing time; Includes water system for basic camping
Cons: Poor instructions and missing hardware reported by owners; Water system components are low quality
7. EZ Cargo Camper Kit 8.5×20: Best for Large Trailers
This kit is one of the few that explicitly fits larger 8.5×20 foot trailers. However, the insulation’s R-5 value is underwhelming for such a large volume, and owners report temperature swings. The wiring harness lacks labeling, making installation tedious. The windows and vents are decent, but overall the kit feels overpriced for what you get.
Who should skip this: If you need a well-insulated large trailer, invest in a custom insulation solution. This kit is best for those who prioritize quick installation over performance.
- R-5 foam insulation with reflective barrier
- 12V wiring harness with 4 LED lights and switch panel
- Two roof vents and three sliding windows
Pros: Covers large trailer dimensions; Multiple vents improve airflow
Cons: Insulation is low R-value for size; Wiring harness is not labeled, causing confusion
Frequently Asked Questions
What is included in a typical cargo trailer camper conversion kit?
Most kits include insulation materials (foam board or reflective), a basic 12V wiring system with lights and a fuse block, one or two RV windows, and a roof vent. Some comprehensive kits also add a power converter, water system, and exterior shore power inlet. Always check the product description for exact components.
Can I install a conversion kit myself?
Yes, most kits are designed for DIY installation. Basic mechanical and electrical skills are helpful. Kits with pre-wired harnesses and adhesive insulation are easier. However, if you are not comfortable with wiring or cutting holes in your trailer, consider professional installation.
How do I choose the right kit for my trailer size?
Measure your trailer’s interior length, width, and height. Kits are often labeled for specific sizes like 6×12 or 7×14. Ensure the kit’s components (windows, vents, insulation) are sized appropriately. Some kits are universal but may require cutting insulation to fit.
Do these kits include plumbing for a sink or shower?
Only a few comprehensive kits include a basic water system with a tank, pump, and sink. Most kits do not include plumbing. If you need a shower or full kitchen, you will need to purchase those components separately or choose a kit that specifically includes them.
Are conversion kits compatible with solar panels?
Most electrical kits can be adapted for solar. Look for a kit that includes a charge controller or a battery management system. If not, you can add a solar charge controller separately. Ensure the wiring gauge and fuse ratings support the additional current from solar panels.
Our Verdict
After researching and comparing these kits, the Forest River Stealth Cargo Trailer Conversion Kit stands out as the top pick for its comprehensive, model-specific design that simplifies installation. For a more budget-friendly option that still offers good quality, the Cargo Gear Camper Conversion Kit is our runner up, providing solid basics at a reasonable price.
