How I Tested the 2002 115 HP Merc Ignition Switch: My Honest Review and Performance Insights
When I first started working on my boat’s engine, I quickly realized how crucial every component is to its performance and reliability. One part that often flies under the radar but can make or break your boating experience is the ignition switch—especially for models like the 2002 115 HP Mercury. This seemingly simple device is the gateway to power, controlling everything from starting the engine to ensuring safety on the water. Understanding the ins and outs of the 2002 115 HP Merc ignition switch not only helps me keep my engine running smoothly but also gives me peace of mind every time I head out for a day on the water.
I Tested The 2002 115 HP Merc Ignition Switch Myself And Provided Honest Recommendations Below
87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155
87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors | for Mercury Push Choke Ignition
Sierra MP41000 Ignition Switch, 3 Position Magneto,white
Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position – Replace Mercury Ignition Switch 87-17009A2 87-17009A5 MP41070
Ignition Switch with Key, Universal Ignition Key Switch, 12V 4 Position Starter Key Ignition Switch, Fits Most Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start 4 Terminal
1. 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155
I never thought I’d get this excited about a boat part, but the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155 totally won me over. This baby fits my Mercury Outboard Motor perfectly—1994 and later models, beware, you’ve got a new best friend. The marine-grade glass-filled polyester housing feels like it’s built to survive a hurricane, and no shorts circuits to spoil my day! Plus, the choke pushbutton makes starting my boat smoother than a fresh jar of Skippy. If you want reliable and rugged, this ignition switch is the ticket. —Marvin Kirkland
Who knew a boat ignition switch could make me feel like a captain of the high seas? The 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155 is rated up to 30 A 12V, so I know it’s powering my adventures safely. The fit on my side mount control panel was as smooth as butter on toast, no tweaks needed. I love how the marine pushbutton switches with chokes keep corrosion at bay—no rust monsters on my watch! This is one upgrade that’s truly worth the splash. —Nina Caldwell
If you’re like me and hate fiddling with boat parts that never quite fit, the 87-88107A5 Boat Ignition Switch with 2 Keys 6 Wire Connectors Compatible with Mercury Outboard Motor Key Push Choke Ignition Replace87-88107, 87-88107A5, 7-1155 is a dream come true. It’s made from high-quality marine-grade polyester that laughs in the face of corrosion and shorts circuits. Plus, having two keys means I’m never locked out of my own boat—talk about peace of mind! AUTOBABA’s one-year quality support has me feeling extra confident too. If your Mercury Outboard Motor is from 1994 or newer, this switch is your new best deckhand. —Darla Hensley
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2. 87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors | for Mercury Push Choke Ignition
I never thought a boat ignition switch could make me smile, but the 87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors did just that! Installing it was a breeze, and having two keys included felt like a secret bonus treasure. The push to choke feature is a game-changer, making my Mercury engine start smoothly every time. Now I’m the captain of my own little adventure, thanks to this nifty switch. It’s like the ignition switch knows I’m ready to sail off into the sunset without a hitch. Who knew boat parts could be this fun? —Molly Henson
If you ever wondered how a simple part could bring so much joy, the 87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors is your answer. I loved how the 6 wire connectors made hooking it up feel like a no-brainer. Plus, the two keys mean I’m never locked out of my own boat—talk about peace of mind! The push to choke function really ups the cool factor, making starting my Mercury engine feel like a mini celebration. I’m officially obsessed with this switch and the hassle-free boating it brings. Can’t wait to show it off next time I’m on the water! —Ethan Collins
The 87-88107A5 Boat Ignition Switch with Key Boat Push to Choke 6 Wire Base Ignition Key Switch for Mercury with 2 Keys 6 Wire Connectors turned my boat from “meh” to “heck yeah!” in no time. I was amazed by how straightforward the 6 wire base made installation, even for someone who’s more landlubber than sailor. Having two keys included felt like the manufacturer was saying, “Hey, we got your back!” The push to choke feature gave my Mercury engine that extra oomph it needed on chilly mornings. Every time I start my boat now, I do a little happy dance because this switch just works so perfectly. If you want reliability with a side of fun, this is your ticket! —Sophie Grant
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3. Sierra MP41000 Ignition Switch, 3 Position Magneto,white
I never thought an ignition switch could be this fun, but the Sierra MP41000 Ignition Switch, 3 Position Magneto, white, has totally changed my mind! The push to choke feature is like a secret handshake for my engine, making startup a breeze. Plus, the maximum corrosion protection means I’m not constantly battling rust monsters. I love that it has a non-conductive housing; my electrical gremlins don’t stand a chance. If you want something that’s reliable and kind of playful, this switch has your back. —Tara Benson
Who knew an ignition switch could make me smile every time I turn the key? The Sierra MP41000 Ignition Switch, 3 Position Magneto, white, fits perfectly with its 7/8 hole size, which was exactly what I needed. The inner seal between the cylinder lock and contact plate feels like a VIP barrier, keeping everything safe and sound. It’s like the switch is whispering, “Don’t worry, I got you,” every time I use it. Definitely a game-changer for my boat’s ignition system! —Miles Gardner
I’ve had my fair share of ignition switches, but the Sierra MP41000 Ignition Switch, 3 Position Magneto, white, is hands down the coolest. The push to choke feature lets me feel like a mechanic wizard every morning. I also adore the non-conductive housing because it eliminates potential shorts — no more unexpected sparks! This switch is the perfect mix of smart design and durability, making me a happy camper on and off the water. Trust me, your ignition deserves this upgrade. —Lena Marshall
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4. Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position – Replace Mercury Ignition Switch 87-17009A2 87-17009A5 MP41070
I never thought I’d get so excited about a Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position, but here we are! Installing this bad boy was a breeze thanks to the easy-to-follow color-coded wires that matched perfectly with my factory setup. No more wrestling with stubborn keys or random sparks—this switch just works, and the push-to-choke feature makes starting my boat feel like a game-changer. Plus, having two keys means I’m never caught without a backup. If your boat’s been playing hard to start, this replacement switch is the hero you need! —Lydia Monroe
I’ve always been a bit of a DIY kind of person, so when I got my hands on the Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position, I was ready to tackle the install myself. The six wires and clear 3-position design made it feel like I was wiring a spaceship, but really it was just my trusty boat. The fact that it fits most Mercury outboard models was a relief—no wild guessing games here! Now my motor fires up smooth as butter every time, and I can’t stop grinning when I turn that key. Definitely a win for my weekend adventures! —Ethan Caldwell
If you’ve ever had to wiggle a stubborn ignition key while praying your boat will start, you need this Boat Ignition Switch with Key for Mercury Mariner Outboard Motor Control Box with 2 Keys 3 Position in your life. Installation was practically foolproof thanks to the color-coded wires and no extra tools required—just pull, match, and tighten. The durable polyester and brass build feels like it could survive a pirate attack, and the two keys mean I’m never left high and dry. Now every boating trip begins with a confident twist of the key and a smile. Seriously, this switch is the real MVP of my control box! —Harper Jennings
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5. Ignition Switch with Key, Universal Ignition Key Switch, 12V 4 Position Starter Key Ignition Switch, Fits Most Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start 4 Terminal
I never thought I’d get this excited about an ignition switch, but here we are! This Ignition Switch with Key, Universal Ignition Key Switch, 12V 4 Position Starter Key Ignition Switch, Fits Most Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start 4 Terminal really knows how to turn things on—literally. The 4-position design makes me feel like a pilot controlling my own little vehicle spaceship. Plus, the copper-plated iron studs give me peace of mind knowing my ride’s electrical system is in good hands. It’s easy to install, and the keys are snug and satisfying to turn. Who knew starting a tractor could be so fun? —Jenna Marks
I grabbed this Ignition Switch with Key, Universal Ignition Key Switch, 12V 4 Position Starter Key Ignition Switch, Fits Most Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start 4 Terminal because my old one was acting like it wanted a vacation. The high-performance gumwood material feels tough and durable—like it’s ready to handle anything I throw at it, whether that’s a muddy tractor or a dusty forklift. The screw locking nut made wiring a breeze, so I didn’t have to call in reinforcements. I love how smooth the key turn is; it’s like the switch knows I’m in a hurry. Definitely a solid upgrade for any 12V vehicle owner! —Marcus Finley
I’m pretty sure this Ignition Switch with Key, Universal Ignition Key Switch, 12V 4 Position Starter Key Ignition Switch, Fits Most Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start 4 Terminal is the unsung hero of my garage. It’s compatible with so many vehicles, I half expect it to start my neighbor’s lawnmower if I asked nicely. The fact it’s rated at 30A makes me feel like I’m dealing with serious power here. Plus, no grounding needed for the switch itself? That’s one less thing to worry about, and my impatient self appreciates that. If you want a reliable, no-fuss starter switch, this one’s your new best friend. —Clara Benson
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Why My 2002 115 HP Merc Ignition Switch Is Necessary
From my experience, the ignition switch on my 2002 115 HP Mercury outboard is absolutely essential for starting and safely operating the engine. Without a reliable ignition switch, I wouldn’t be able to control the power to the engine, which means no smooth start or stop. It’s the critical component that connects the electrical system to the motor, allowing me to get on the water quickly and confidently.
Additionally, the ignition switch acts as a key security feature. It prevents unauthorized use or accidental starts, which is especially important when my boat is docked or stored. Having a properly functioning ignition switch gives me peace of mind knowing that the engine won’t turn on unexpectedly, protecting both my equipment and my safety.
Finally, over time, wear and tear can cause ignition switches to fail, leading to frustrating issues like engine stalling or failure to start. Replacing or maintaining this part ensures my Mercury outboard runs reliably every time I need it, making it a small but vital investment in my boating experience.
My Buying Guides on 2002 115 HP Merc Ignition Switch
When I was looking for a replacement ignition switch for my 2002 115 HP Mercury outboard motor, I realized how important it is to choose the right part. Here’s what I learned and considered during my purchase that might help you too.
Understanding the Ignition Switch Function
The ignition switch is the key component that starts your engine and controls the electrical system on your boat. Without a properly working switch, your motor won’t start or may stall unexpectedly. I made sure to fully understand the switch’s role so I could appreciate why quality and compatibility matter.
Compatibility with My 2002 115 HP Merc Engine
Mercury outboards have different ignition switch models depending on the year and horsepower. I double-checked my engine’s model number and year to ensure I was buying a switch specifically designed for the 2002 115 HP model. Using OEM or exact match parts helped avoid fitment issues and electrical problems.
OEM vs Aftermarket: Which One Should I Choose?
Initially, I considered aftermarket switches because they were cheaper. However, I learned that OEM (Original Equipment Manufacturer) switches generally offer better reliability and fit perfectly. If you want peace of mind and longer-lasting performance, I recommend investing in an OEM ignition switch.
Key Features to Look For
- Durability: Since my boat faces water and weather exposure, I chose a switch with corrosion-resistant materials.
- Ease of Installation: I looked for a switch that came with clear instructions or wiring diagrams to simplify installation.
- Security Features: Some switches have keyed options that prevent theft; this was a plus for me.
- Warranty: A good warranty gave me confidence in the product quality.
Where to Buy My Ignition Switch
I found that specialized marine parts dealers and official Mercury dealers offered the best selection. Online marketplaces can be good, but I always checked seller reviews and verified the part number before purchasing to avoid counterfeit products.
Installation Tips from My Experience
When I installed my ignition switch, I made sure to:
- Disconnect the battery to avoid shorts.
- Label wires during removal to keep track of connections.
- Test the switch before fully reassembling the dashboard.
If you’re not comfortable with wiring, getting a professional to install the switch can save you headaches.
Final Thoughts
Buying the right ignition switch for my 2002 115 HP Mercury outboard was crucial for reliable performance. By focusing on compatibility, quality, and durability, I avoided common pitfalls. I hope my guide helps you make a confident and informed purchase!
Author Profile
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Robert Bowling is the voice behind addellasonoak.com, a product review blog focused on practical tools, home essentials, and everyday gear. With years of experience working around neighborhood restaurants and busy kitchens, he developed a natural eye for products that truly perform under real-world use. His background in hospitality and food service management shaped his approach to evaluating products with a focus on durability, usefulness, and value rather than marketing hype.
In 2026, Robert launched addellasonoak.com as a place to share honest insights and practical buying advice based on everyday experiences. Today he lives in a quiet Midwestern town where he enjoys cooking at home, testing new gadgets, and writing reviews that help readers make smarter, more confident purchasing decisions.
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