A Practical Guide to Installing the Easy Pandoras Family PCB Encoder Plug and Play Main Install Kit in an Arcade Cabinet

Introduction: Why this kit simplifies Pandora’s Box upgrades

For arcade enthusiasts who want a clean, reliable upgrade path to Pandora’s Box Family Edition, the Easy Pandoras Family PCB Encoder Plug and Play Main Install Kit offers a flexible, plug-and-play solution. It’s designed to make wiring less daunting by providing a dedicated PCB with a main harness and supports a 12V input for LED lighting and other features. The core advantage is explicit compatibility with varied control panels and button sizes, so you don’t have to rip out your cabinet’s guts to upgrade.

This guide covers what’s in the kit, what you must have on hand, how the hardware works, and a careful, step-by-step process to install it in most arcade cabinets. Whether you’re retrofitting a cabinet you still love or building a new Pandora’s Box-based arcade, following these steps will help you achieve solid performance and a neat, organized wiring layout.

What’s included in the kit

• 1x PCB Board
• Main Harness
• 2 x Sanwa joystick connections

The kit is built with flexibility in mind. The PCB’s 12V input enables simple power expansion for LED buttons or marquees, and the design intentionally avoids forcing you into a single terminal size. You can mix and match 0.110" and 0.187" terminal sizes and still have reliable connections. This versatility is a boon if your control panel uses multiple connector types or if you’re upgrading an older cabinet where parts vary from joystick to button style.

What you’ll need besides the kit

• 2-pin JST jumper cables for your buttons (the kit does not include every possible cable configuration, so prepare the cables that match your buttons).
• The cable included for the joystick will work with a Sanwa JLF, but you may need to adapt or add cables for other joystick brands.
• Basic hand tools (screwdrivers, wire cutters/strippers) and a multimeter for continuity checks.
• A safe, powered-down cabinet environment to avoid shorts during wiring.

Having these extras on hand ensures you can comfortably route wires, label connections, and avoid last-minute scrambles in the middle of an install session.

Understanding the hardware: what you’re connecting

The Easy Pandoras Family PCB Encoder acts as the central hub for your Pandora’s Box setup.

The main harness connects to the PCB and provides a structured path for power and signal lines. The two Sanwa joystick connections allow you to drive reliable, performance-oriented control inputs with minimal cable clutter. Thanks to the 12V input, you can feed power to LED indicators, backlit marquees, or other low-voltage accessories, which helps you achieve a polished, arcade-grade appearance without adding separate power rails.

Because the kit supports mixed terminal sizes, layout decisions often come down to cable management and ease of maintenance rather than hardware compatibility. Plan your wiring around the control panel’s layout to minimize crossovers, keep high-traffic cables organized, and avoid sharp bends that can fatigue wires over time.

Planning your install: layout, safety, and documentation

Before you mount or connect anything, take a moment to map out where each connection will run. Labeling wires as you go saves time when you test and troubleshoot. It’s also helpful to have a small sketches showing which PCB harness pin corresponds to each button, joystick, or LED feature. This is especially valuable when you mix different button types or when you retrofit an older cabinet with newer components.

Safety first: unplug the cabinet from power before handling any wiring. If you’re working with AC line power near the cabinet, use a non-contact voltage tester to confirm the mains is off before touching any wiring. Grounding and clean wire routing reduce the risk of shorts, shorts that could affect other components, or even your ability to test the system after installation.

Step-by-step installation guide

1. Prepare the cabinet: unplug from any power source, remove the back panel if needed, and clear workspace. Inspect your control panel to understand where the harness will route and which screws or mounting points you’ll use for the PCB.
2. Mount the PCB: position the PCB in a secure location with adequate clearance. Use screws or standoffs as appropriate for your cabinet to prevent vibration from knocking components loose during play.
3. Connect the main harness: attach the main harness to the PCB’s connector, ensuring the pins align correctly. A misaligned connection can cause non-functional buttons or erratic inputs, so take your time and double-check orientation before seating the connector fully.
4. Wire the control panel: connect each button’s JST connector to its corresponding terminal on the harness, making sure that cable lengths are appropriate for a clean, unobtrusive routing. If you’re mixing terminal sizes, ensure the connector type matches the intended seating spot and that there’s no tension on the wires when the panel is closed.
5. Integrate the joysticks: connect the two Sanwa joystick connections to their ports. If you’re using a different brand, verify that the adapter or harness aligns with your joystick’s plug and that the power and ground lines are secure.
6. Power and LED considerations: connect the 12V input to your power distribution. If you’re adding LED lighting or a marquee, route those wires to the same supply to ensure consistent brightness and synchronized operation. Use zip ties to secure loose wires and create a tidy wiring loom.
7. Test progressively: with the cabinet still open, apply power and test the buttons and joysticks one by one. Confirm each input corresponds to the correct action in Pandora’s Box. If something feels off, power down again and recheck connections for symmetry and correct orientation.
8. Finalize cable routing: once all inputs register correctly, finish cable management by guiding wires along cabinet edges, using adhesive-backed clips or channels to keep everything in place during cabinet movement.
9. Close up and test: reassemble the back panel, power on, and perform a full functional test of the monitor, audio, and all control inputs to ensure no interference or misbehavior emerges under normal play conditions.

What matters when upgrading your Pandora’s Box setup

The key advantages of this kit are its flexibility, power-handling capability, and straightforward wiring path. The 12V input is particularly useful for adding features like LED buttons or a marquee without needing a separate power supply or complex wiring harness. The ability to mix 0.110 and 0.187 terminals means you’re not locked into a single component standard, which is a common pain point when retrofitting older cabinets with newer hardware.

When planning your upgrade, consider how your control panel will be used, how much space you have behind the panel, and how you prefer to route cables for service ease. If you’re replacing more than a few switches or you’re integrating new lighting, think about a dedicated trunk line for power and a separate trunk line for signal lines to reduce crosstalk and noise.

With these considerations in mind, you’ll be set to achieve a clean install that looks professional and performs reliably for years of arcade sessions.

Additional tips: video, resources, and ongoing maintenance

Many installers find it helpful to watch the install video linked or referenced by the product page. A visual walkthrough can illuminate the sequence of steps and highlight where common mistakes occur. Keep the install area well-lit so you can clearly see connections, and consider labeling wires with color-coded tags to prevent confusion when you or someone else services the cabinet later.

Maintenance is straightforward. Periodically inspect the wiring loom for signs of wear, ensure that any heat-generating components have adequate ventilation, and re-tighten mounting hardware if you notice looseness after heavy use. If you need to refresh the LED lighting, you can reuse the same 12V harness and simply replace or extend LED segments rather than redoing the entire wiring network.

Safety reminders and troubleshooting

Always unplug the cabinet before performing any wiring changes. If a button or joystick stops responding, confirm the harness seating and test with a multimeter to verify continuity. If you encounter persistent issues after rechecking connections, consult the installation video or seek assistance from the DIY Retro Arcade community or support channels. In many cases, a misaligned connector or a loose ground is the culprit, and a careful reseating of connectors restores full functionality.

Conclusion: preparing your cabinet for arcade-grade performance

The Easy Pandoras Family PCB Encoder Plug and Play Main Install Kit is designed to make Pandora’s Box upgrades accessible to hobbyists at various skill levels. By offering flexible wiring compatible with multiple terminal sizes, a 12V power option for lighting, and a straightforward installation flow, this kit can save time and reduce the complexity of cabinet upgrades. Take the time to plan, label, and test thoroughly, and you’ll enjoy a reliable, aesthetically pleasing arcade setup that stands up to years of play.