Retrofit Cruise Control Into 1999 Jeep Cherokee XJ

by Kenji Nakamura 51 views

Hey Jeep enthusiasts! Found a sweet deal on a 1999 Jeep Cherokee XJ but missing cruise control? No worries, retrofitting cruise control is totally doable, and we're here to walk you through the process. Let's dive into what's involved in adding this convenient feature to your ride, how much it might cost, and everything else you need to know.

Understanding Cruise Control Systems for the Cherokee XJ

Before we jump into the nitty-gritty, let's get a handle on what cruise control is and how it integrates into your Jeep Cherokee XJ. Cruise control, at its core, is an incredibly handy system that maintains a constant speed without you needing to keep your foot on the gas pedal. This is a game-changer for long drives, helping to reduce driver fatigue and even improve fuel efficiency by keeping your speed consistent. For the 1999 Jeep Cherokee XJ, the system typically involves several key components:

  • Cruise Control Module: This is the brain of the operation, controlling the system based on input from the driver and vehicle sensors.
  • Actuator Cable or Servo: This component physically adjusts the throttle to maintain the desired speed. In older systems like the XJ, this is often a cable-driven servo.
  • Steering Wheel Controls: These are the buttons or switches on your steering wheel that allow you to engage, disengage, set, and adjust the cruise control speed. These controls send signals to the cruise control module.
  • Vehicle Speed Sensor (VSS): The VSS provides speed information to the cruise control module. This is crucial for the system to know how fast you're going and make the necessary adjustments.
  • Wiring Harness: This is the network of wires that connects all the components, ensuring they communicate properly. A reliable wiring harness is essential for the system to function correctly.
  • Vacuum Lines (if applicable): Some older cruise control systems use vacuum to operate the servo. If this is the case for your retrofit kit, you'll need to ensure the vacuum lines are properly connected and free of leaks.

When retrofitting cruise control, you'll typically be looking at either sourcing these components individually or purchasing a complete aftermarket kit. Aftermarket kits often bundle everything you need, including detailed instructions, making the installation process smoother. Keep in mind that compatibility is key, so ensuring the kit or components are designed for your specific year and model of the Cherokee XJ is critical. This compatibility extends beyond just the electrical and mechanical fit; it also includes ensuring the system integrates seamlessly with your vehicle’s existing computer systems and sensors. Understanding these components and how they work together will give you a solid foundation as we move into the installation process. So, whether you're a seasoned DIYer or a newbie, having this knowledge will help you tackle the retrofit with confidence.

What's Involved in Retrofitting Cruise Control?

The process of retrofitting cruise control into your 1999 Jeep Cherokee XJ involves several steps, each requiring careful attention to ensure a successful installation. First, you'll need to gather all the necessary parts. This typically includes the cruise control module, servo, steering wheel controls, wiring harness, and any necessary brackets or hardware. You can either source these components individually from junkyards or purchase a complete aftermarket kit, which often simplifies the process by providing everything you need in one package. The advantage of a kit is that it’s designed to work together, which can reduce the risk of compatibility issues.

Once you have all the parts, the real work begins. The installation process generally involves the following steps:

  1. Disconnecting the Battery: This is a crucial safety step to prevent electrical shocks or damage to your vehicle's electrical system. Always disconnect the negative terminal first.
  2. Installing the Cruise Control Module: The module is the brain of the system and needs to be mounted in a location where it's protected and accessible. Common locations include under the dashboard or in the engine bay.
  3. Installing the Servo: The servo, or actuator, is what physically controls the throttle. It usually mounts to the engine and connects to the throttle cable. Proper adjustment of the servo cable is critical to ensure the cruise control functions correctly.
  4. Replacing the Steering Wheel Controls: This step involves removing the old steering wheel cover and installing the new controls that include the cruise control buttons. This may require some disassembly of the steering wheel, so take care to follow the instructions closely and ensure all connections are secure.
  5. Wiring: This is often the most challenging part of the installation. You'll need to route the wiring harness throughout the vehicle, connecting the module, servo, steering wheel controls, and vehicle speed sensor. This may involve tapping into existing wiring, so a wiring diagram for your specific year and model of Cherokee XJ is invaluable. Ensuring proper connections and secure wiring is crucial for the system's reliability.
  6. Connecting to the Vehicle Speed Sensor (VSS): The VSS provides the speed signal to the cruise control module. Locating and tapping into the VSS wire is essential for the system to function. Again, a wiring diagram will be your best friend here.
  7. Testing the System: After everything is connected, it's time to test the system. Reconnect the battery and take the vehicle for a test drive. Verify that the cruise control engages, disengages, sets the speed, and maintains it properly. If there are any issues, you'll need to troubleshoot the wiring and connections.

Retrofitting cruise control can be a rewarding project, but it requires patience, attention to detail, and a good understanding of your vehicle's electrical system. If you're not comfortable working with electrical components, it might be best to seek professional help. However, for those who enjoy a good DIY challenge, adding cruise control to your Cherokee XJ can significantly enhance your driving experience.

Cost Breakdown: DIY vs. Professional Installation

Okay, let's talk money! The cost of retrofitting cruise control into your 1999 Jeep Cherokee XJ can vary significantly depending on whether you decide to tackle the project yourself or hire a professional. Doing it yourself can save you a good chunk of change, but it also requires more time and effort. On the other hand, professional installation ensures the job is done correctly but comes with a higher price tag.

DIY Installation Costs

If you're a hands-on kind of person, the DIY route can be quite appealing. Here's a general breakdown of the costs you might encounter:

  • Aftermarket Cruise Control Kit: A complete aftermarket kit designed for your Cherokee XJ can range from $150 to $400. Prices vary based on the brand, features, and included components. Higher-end kits may include more advanced features or better-quality components, which can justify the higher cost.
  • Individual Components (Salvaged Parts): If you're looking to save even more money, you might consider sourcing individual components from a junkyard. This can bring the cost down to $50 to $200, but it requires more legwork and carries the risk of using parts that may be worn or not fully functional. You'll need to ensure that all salvaged parts are compatible with your vehicle and in good working condition.
  • Tools and Supplies: Depending on what you already have in your toolbox, you might need to purchase some additional tools or supplies. This could include wire strippers, crimpers, electrical tape, a multimeter, and various hand tools. Budget around $20 to $100 for these items, depending on your needs. Investing in quality tools can make the job easier and ensure better results.
  • Wiring Diagrams and Manuals: Access to a wiring diagram specific to your 1999 Cherokee XJ is essential for a successful installation. You might need to purchase a repair manual or subscribe to an online service to access this information. Expect to spend $20 to $50 for this resource. A good wiring diagram will save you time and frustration by helping you identify the correct wires and connections.

So, for a DIY installation, you're looking at a total cost ranging from $170 to $550, depending on the route you take and the components you choose.

Professional Installation Costs

Hiring a professional to install cruise control ensures the job is done correctly and can save you a lot of time and hassle. However, this convenience comes at a cost. Here’s what you can expect to pay for professional installation:

  • Labor Costs: Labor rates vary by shop and location, but you can generally expect to pay between $75 and $150 per hour. A typical cruise control installation might take 3 to 6 hours, so labor costs could range from $225 to $900.
  • Parts Costs: The shop will likely source the parts, which may include a markup compared to what you could find yourself. Expect to pay $200 to $500 for an aftermarket kit installed by a professional. The exact cost will depend on the quality of the kit and the shop's pricing.
  • Additional Costs: Some shops may charge additional fees for diagnostics or programming, especially if your vehicle requires specific software updates to integrate the cruise control system. It's always a good idea to get a detailed estimate before giving the go-ahead.

Therefore, professional installation can cost anywhere from $425 to $1400 or more. While this is significantly higher than the DIY cost, it provides peace of mind knowing the job is done right and is often backed by a warranty.

Making the Decision

Deciding between DIY and professional installation depends on your budget, skill level, and comfort working on your vehicle. If you're confident in your abilities and have the time, DIY can be a great way to save money. However, if you're not comfortable with electrical work or prefer the assurance of a professional installation, then hiring a mechanic is the way to go. Ultimately, weighing the costs and benefits will help you make the best decision for your situation.

Step-by-Step Installation Guide (Simplified)

Alright, let's break down the installation process into simpler, more digestible steps. While we've already covered the general process, this simplified guide will give you a clearer picture of what's involved. Remember, this is a general overview, and you should always refer to the specific instructions included with your kit or components.

  1. Preparation and Safety First:
    • Gather Your Tools and Parts: Make sure you have everything you need before you start. This includes the cruise control kit, wiring harness, steering wheel controls, tools, and a wiring diagram for your 1999 Jeep Cherokee XJ.
    • Disconnect the Battery: This is non-negotiable. Disconnect the negative terminal first to prevent any electrical mishaps.
  2. Module Installation:
    • Locate Mounting Point: Find a suitable location for the cruise control module, typically under the dash or in the engine bay. Ensure it's secure and protected from the elements.
    • Mount the Module: Use the provided brackets or hardware to securely mount the module in the chosen location.
  3. Servo Installation:
    • Mount the Servo: The servo, or actuator, usually mounts to the engine. Follow the instructions to install it properly.
    • Connect the Throttle Cable: Connect the servo cable to the throttle linkage. This connection is crucial, so ensure it’s secure and properly adjusted.
  4. Steering Wheel Control Installation:
    • Remove the Old Steering Wheel Cover: Carefully remove the existing steering wheel cover, which may involve removing some screws or clips.
    • Install the New Controls: Install the new steering wheel controls with the cruise control buttons. Make sure all connections are secure.
  5. Wiring – The Heart of the Operation:
    • Route the Wiring Harness: Route the wiring harness throughout the vehicle, connecting the module, servo, and steering wheel controls.
    • Connect to the Vehicle Speed Sensor (VSS): Locate the VSS wire and tap into it. This wire provides the speed signal to the cruise control module.
    • Make the Connections: Use the wiring diagram to connect all the wires. Pay close attention to ensure each wire is connected to the correct terminal. Secure all connections with crimps or connectors.
  6. Testing and Troubleshooting:
    • Reconnect the Battery: Reconnect the battery and start the vehicle.
    • Test the System: Take the vehicle for a test drive and verify that the cruise control engages, disengages, sets the speed, and maintains it properly.
    • Troubleshoot if Necessary: If the system isn't working as expected, double-check all the wiring connections and consult the troubleshooting section of your kit's instructions.

This simplified guide should give you a better overview of the installation process. Remember, each step requires careful attention to detail, and it’s always a good idea to consult the specific instructions for your kit or components. If you're feeling overwhelmed, don't hesitate to seek help from a professional.

Tips and Tricks for a Smooth Retrofit

To ensure your cruise control retrofit goes as smoothly as possible, here are some tips and tricks gathered from experienced DIYers and mechanics:

  1. Invest in a Quality Wiring Diagram: A detailed wiring diagram specific to your 1999 Jeep Cherokee XJ is worth its weight in gold. It will help you identify the correct wires and connections, saving you time and frustration. Trying to guess which wire goes where can lead to serious headaches, so don't skimp on this crucial resource.
  2. Take Pictures Before Disconnecting Anything: Before you start disconnecting wires or removing components, take photos of the existing setup. This provides a visual reference that can be incredibly helpful when you're putting everything back together. It's like having a roadmap of how things should look, which can prevent mistakes and ensure you don't forget any connections.
  3. Use a Multimeter to Test Connections: A multimeter is your best friend when working with electrical systems. Use it to test for continuity and voltage, ensuring that your connections are solid and that power is flowing where it should. This can help you quickly diagnose any wiring issues and prevent damage to your vehicle's electrical system.
  4. Organize Your Parts: Keep all the components and hardware organized as you disassemble the vehicle. Use labeled bags or containers to store screws, bolts, and other small parts. This will prevent you from losing anything and make reassembly much easier. A little organization goes a long way in a project like this.
  5. Double-Check Your Connections: Before you button everything up, double-check all your wiring connections. Make sure they are secure and properly insulated. Loose or poorly insulated connections can cause issues down the road, so it's worth taking the time to ensure everything is solid.
  6. Test the System Thoroughly: Once you've completed the installation, test the cruise control system in various conditions. Engage it at different speeds and on different types of roads. This will help you identify any issues early on and ensure the system is functioning correctly.
  7. Consider Heat Shrink Tubing: When making wiring connections, use heat shrink tubing to protect and insulate the splices. Heat shrink tubing provides a clean, professional finish and helps prevent corrosion and shorts. It's a small investment that can significantly improve the reliability of your wiring.
  8. Patience is Key: Retrofitting cruise control can be a complex project, so be patient and take your time. Rushing through the process can lead to mistakes, which can be time-consuming and costly to fix. If you get stuck, take a break and come back to it with a fresh perspective.
  9. Seek Help When Needed: If you're feeling overwhelmed or unsure about a particular step, don't hesitate to seek help. Consult online forums, watch tutorial videos, or ask a friend who has experience with automotive electrical systems. There's no shame in asking for help, and it can prevent you from making costly mistakes.

By following these tips and tricks, you can increase your chances of a successful cruise control retrofit and enjoy the added convenience on your next road trip.

Is Retrofitting Cruise Control Worth It?

So, the big question: Is retrofitting cruise control into your 1999 Jeep Cherokee XJ really worth the effort and expense? For many Jeep owners, the answer is a resounding yes! Cruise control offers a range of benefits that can significantly enhance your driving experience, especially on long trips. Let's break down the pros and cons to help you decide if it's the right choice for you.

The Pros: Why Cruise Control is Awesome

  • Reduced Driver Fatigue: One of the primary benefits of cruise control is that it reduces driver fatigue on long journeys. By maintaining a constant speed without the need to constantly press the accelerator, your leg muscles get a break, and you can focus more on steering and navigating. This can make long drives much more comfortable and less tiring.
  • Improved Fuel Efficiency: Cruise control can help you maintain a consistent speed, which often leads to better fuel economy. Sudden acceleration and deceleration waste fuel, while a steady speed optimizes fuel consumption. This can save you money at the gas pump over time, making cruise control a practical investment.
  • Enhanced Driving Comfort: Driving with cruise control can be more relaxing and enjoyable. It allows you to maintain a smooth, consistent speed, reducing the need for constant adjustments. This can make your overall driving experience much more pleasant, especially on highways and open roads.
  • Potential for Increased Resale Value: While it may not be a huge selling point, having cruise control can potentially increase the resale value of your Jeep Cherokee XJ. Many buyers appreciate the convenience and comfort of cruise control, so it can be a nice feature to highlight when you decide to sell your vehicle.

The Cons: Potential Drawbacks

  • Cost: Retrofitting cruise control can involve a significant upfront cost, especially if you opt for professional installation. The cost of the kit and labor can add up, so it's important to weigh the benefits against the expense.
  • Installation Complexity: Installing cruise control can be a complex project, particularly if you're not familiar with automotive electrical systems. It involves wiring, connecting components, and potentially tapping into your vehicle's computer system. If you're not comfortable with DIY projects, you may need to hire a professional, which adds to the cost.
  • Time Investment: Whether you're doing it yourself or hiring a professional, retrofitting cruise control takes time. DIY installations can take several hours or even a full weekend, while professional installations require scheduling an appointment and leaving your vehicle at the shop.
  • Potential for Malfunctions: Like any mechanical or electrical system, cruise control can malfunction. If not installed correctly or if a component fails, the system may not work properly, which can be frustrating and potentially dangerous.

The Verdict

Ultimately, whether or not retrofitting cruise control is worth it depends on your individual needs and preferences. If you frequently take long drives and value comfort and fuel efficiency, cruise control can be a worthwhile investment. However, if you primarily drive short distances or are on a tight budget, the cost and complexity may not be justified.

Consider your driving habits, budget, and skill level when making your decision. If you're unsure, weigh the pros and cons carefully and consider seeking advice from other Jeep owners or a trusted mechanic. With the right approach, adding cruise control to your 1999 Jeep Cherokee XJ can be a great way to enhance your driving experience.

Final Thoughts

Retrofitting cruise control into your 1999 Jeep Cherokee XJ is a project that can add significant value to your driving experience. Whether you choose the DIY route or opt for professional installation, the benefits of reduced fatigue, improved fuel efficiency, and enhanced comfort are hard to ignore. By understanding the components, installation process, and costs involved, you can make an informed decision that fits your needs and budget.

So, if you're looking to upgrade your Cherokee XJ and make those long drives a little easier, cruise control might just be the perfect addition. Happy Jeeping, guys, and safe travels! Now you're well-equipped to make a decision about adding cruise control to your classic Cherokee. Whether you choose to DIY or go the professional route, the open road awaits!