The installation of an electric jack on your trailer is a straightforward process that can significantly enhance your camping or hauling experience by automating the often tedious task of raising and lowering the trailer tongue. This guide provides a comprehensive, step-by-step explanation of how to install an electric jack safely and effectively, allowing you to enjoy the convenience and efficiency it offers.
Choosing the Right Electric Jack
Before diving into the installation, selecting the appropriate electric jack for your trailer is crucial. Several factors contribute to this decision, including your trailer’s gross trailer weight (GTW), the jack’s lift capacity, and the desired features and functionality.
Determining Your Trailer’s Needs
- Calculate Your GTW: Locate the GTW on your trailer’s VIN sticker. Ensure the electric jack’s lift capacity exceeds this weight for safe and reliable operation. Remember, the jack only lifts the tongue weight, not the entire trailer, but it’s better to err on the side of caution.
- Consider Lift Capacity: Electric jacks typically offer lift capacities ranging from 2,000 lbs to 5,000 lbs or more. Choose one that comfortably exceeds your trailer’s expected tongue weight, accounting for any additional cargo you might carry.
- Evaluate Features: Look for features such as built-in lights for nighttime use, remote control operation for added convenience, and adjustable drop legs to minimize cranking distance.
Types of Electric Jacks
- A-Frame Jacks: These are the most common type and mount directly to the trailer’s A-frame coupler. They are relatively easy to install and offer good stability.
- Swivel Jacks: These jacks can be rotated out of the way when not in use, which is useful for trailers with limited ground clearance.
- Side-Mount Jacks: These mount to the side of the trailer frame and are suitable for trailers where A-frame mounting is not possible.
Preparing for Installation
Once you’ve chosen the right electric jack, gather the necessary tools and materials. Proper preparation is essential for a smooth and successful installation.
Tools and Materials Required
- Electric Drill with appropriate drill bits (pilot and mounting holes)
- Wrenches and sockets (matching the size of the mounting bolts)
- Wire Strippers/Crimpers
- Volt Meter/Multimeter
- Safety Glasses
- Work Gloves
- Electrical Tape or Heat Shrink Tubing
- Butt Connectors or Wire Connectors
- Screws or bolts (usually included with the jack)
- Wire (gauge appropriate for the jack’s amperage draw)
- Battery Terminal Connectors (if connecting directly to the battery)
- Circuit Breaker or Fuse (with appropriate amperage rating)
- Dielectric Grease (for electrical connections)
Safety Precautions
- Disconnect the Trailer from the Tow Vehicle: Ensure the trailer is safely detached before starting the installation.
- Chock the Trailer Wheels: Prevent the trailer from rolling during the installation process.
- Wear Safety Glasses and Gloves: Protect your eyes and hands from potential hazards.
- Work in a Well-Ventilated Area: If using any solvents or cleaners, work in a well-ventilated area.
- Consult the Electric Jack’s Manual: Always refer to the manufacturer’s instructions for specific installation guidelines and safety information.
Step-by-Step Installation Guide
Follow these steps to install your electric jack safely and effectively.
- Remove the Old Jack: Disconnect the existing manual jack from the trailer frame. This usually involves removing bolts or screws. Retain the hardware if it’s compatible with the new jack.
- Position the Electric Jack: Place the electric jack in the designated mounting location. Ensure it’s properly aligned and that the base sits flush against the trailer frame.
- Mark the Mounting Holes: Using the electric jack’s base plate as a template, mark the locations for the mounting holes on the trailer frame.
- Drill Pilot Holes: Drill small pilot holes at the marked locations. This will make it easier to install the mounting bolts or screws.
- Drill Mounting Holes: Drill the final mounting holes, ensuring they are the correct size for the bolts or screws you’ll be using.
- Secure the Electric Jack: Attach the electric jack to the trailer frame using the bolts or screws. Tighten them securely to ensure the jack is firmly mounted.
- Wire the Electric Jack: Connect the electric jack’s power wires to a suitable power source. This typically involves connecting the positive wire to the trailer’s 12V battery and the negative wire to a ground connection.
- Install a Circuit Breaker or Fuse: Protect the electric jack’s wiring by installing a circuit breaker or fuse in the positive wire. This will prevent damage in case of a short circuit.
- Test the Electric Jack: Once the wiring is complete, test the electric jack to ensure it’s functioning properly. Extend and retract the jack to verify its operation.
- Apply Dielectric Grease: Coat all electrical connections with dielectric grease to prevent corrosion and ensure a reliable connection.
Testing and Maintenance
After installation, regular testing and maintenance will ensure your electric jack continues to function reliably for years to come.
Regular Testing
- Periodically test the jack by extending and retracting it to ensure smooth operation.
- Check the wiring connections for any signs of corrosion or damage.
- Inspect the jack’s housing for any cracks or damage.
Maintenance Tips
- Lubricate the Jack Screw: Regularly lubricate the jack screw with a high-quality grease to ensure smooth operation and prevent wear.
- Clean the Jack: Keep the jack clean and free of dirt and debris.
- Store the Jack Properly: If you’re storing your trailer for an extended period, cover the jack to protect it from the elements.
Frequently Asked Questions (FAQs)
FAQ 1: What size wire should I use for my electric jack?
The correct wire gauge depends on the jack’s amperage draw and the distance from the battery. Consult the jack’s manual for specific recommendations. Generally, for shorter runs, 10-gauge wire is suitable for most electric jacks. For longer runs, consider 8-gauge or even 6-gauge wire to minimize voltage drop.
FAQ 2: Can I wire my electric jack directly to my tow vehicle’s battery?
While technically possible, it’s generally not recommended. Wiring directly to the tow vehicle’s battery can drain the battery and potentially cause starting issues. It’s better to wire it to the trailer’s battery, which can be charged by the tow vehicle while driving.
FAQ 3: Do I need a special battery for my electric jack?
A standard 12V deep-cycle battery is typically sufficient for powering an electric jack. However, the battery’s amp-hour (Ah) rating will determine how long the jack can operate before needing to be recharged. Choose a battery with an Ah rating that meets your needs.
FAQ 4: How do I protect my electric jack from the weather?
Most electric jacks are designed to be weather-resistant, but it’s still a good idea to protect them from the elements. Consider using a jack cover to shield it from rain, snow, and sun. Also, ensure all electrical connections are properly sealed to prevent corrosion.
FAQ 5: What if my electric jack stops working?
First, check the circuit breaker or fuse to see if it has tripped or blown. If not, use a voltmeter to check for voltage at the jack’s power wires. If there’s no voltage, check the wiring connections and the battery. If there is voltage, the jack itself may be faulty and require repair or replacement.
FAQ 6: Can I use my electric jack to lift the entire trailer?
No! Electric jacks are designed to lift only the tongue weight of the trailer, not the entire trailer. Attempting to lift the entire trailer can damage the jack and potentially cause the trailer to tip over. Use proper leveling blocks under the trailer wheels to level the trailer.
FAQ 7: What is the best way to ground my electric jack?
Connect the jack’s negative wire to a clean, rust-free metal surface on the trailer frame. Scrape away any paint or rust to ensure a good electrical connection. You can also use a star washer to improve the connection.
FAQ 8: My electric jack is making a grinding noise. What could be the problem?
A grinding noise usually indicates a lack of lubrication. Apply a high-quality grease to the jack screw and any other moving parts. If the noise persists, the jack may have worn gears or bearings and require repair or replacement.
FAQ 9: How often should I lubricate my electric jack?
Lubricate your electric jack at least once a year, or more frequently if you use it regularly or in harsh conditions.
FAQ 10: Can I adjust the height of my electric jack?
Many electric jacks have an adjustable drop leg that allows you to fine-tune the height of the jack. This can be useful for leveling the trailer on uneven ground. Refer to the jack’s manual for instructions on how to adjust the drop leg.
FAQ 11: What is the difference between an electric jack and a hydraulic jack?
Electric jacks use an electric motor to turn a screw, while hydraulic jacks use hydraulic fluid to lift the load. Electric jacks are generally more compact and easier to install, while hydraulic jacks can lift heavier loads.
FAQ 12: Where can I find a qualified technician to install my electric jack?
If you’re not comfortable installing the electric jack yourself, you can contact a local RV repair shop or trailer dealer. They can provide professional installation services. Be sure to get a quote before authorizing any work.
By following these steps and tips, you can confidently install an electric jack on your trailer and enjoy the added convenience and efficiency it provides. Remember to prioritize safety and consult the manufacturer’s instructions for specific guidance.