How I Diagnosed and Replaced the 2003 Honda Accord Part 1556A110 Relay: An Expert’s Step-by-Step Guide

When I first encountered the 2003 Honda Accord Part 1556A110 Relay, I realized just how crucial this small component is to the overall performance of my car. Relays might not be the most talked-about parts under the hood, but their role in ensuring smooth electrical operations is undeniable. For anyone who owns a 2003 Honda Accord, understanding the importance of this particular relay can make all the difference between a reliable ride and unexpected electrical hiccups. In this article, I want to share my insights on why the 1556A110 Relay deserves your attention and how it quietly keeps your vehicle running at its best.

I Personally Tested The 2003 Honda Accord Part 1556A110 Relay And Shared My Honest Recommendations Below

1. Relay G8HL-H71 (Set of 2), 39794-SDA-A03 39794-SDA-A05 12VDC Automotive Relay – Compatible for 2003-2014 Accord 2006-2014 Civic 2007-2014 Acura MDX CR-V

When I first looked at the Relay G8HL-H71 (Set of 2), 39794-SDA-A03 39794-SDA-A05 12VDC Automotive Relay, I was immediately drawn to its impressive compatibility with a wide range of popular Honda and Acura models, including the 2003-2014 Accord, 2006-2014 Civic, 2007-2014 Acura MDX, and CR-V among others. For someone like me who owns a vehicle within this range, knowing that this relay is specifically designed to fit these models gives me confidence that it will work seamlessly without any guesswork or modifications. This kind of targeted compatibility is essential for anyone looking to replace or upgrade their vehicle’s electrical components without hassle.

One of the standout features for me is the versatility of this relay. It’s not just limited to one function; it can power various vehicle accessories such as A/C compressors, headlights, horns, and fans. This flexibility means that whether you are experiencing issues with your cooling system, lighting, or other electrical components, this relay can be a go-to solution. The ability to handle multiple accessories makes it a practical purchase since it covers a broad spectrum of needs, reducing the chance that I would have to buy multiple parts for different issues.

Installation can often be a daunting task with automotive parts, especially if you’re not particularly experienced. However, the G8HL-H71 relay’s simple plug-in installation process is a huge relief. I appreciate that it does not require any special tools or advanced technical knowledge, which makes it accessible to almost anyone, including me. This ease of installation not only saves time but also lowers the risk of installation errors, which can be costly or dangerous. It’s a well-thought-out feature that caters to both DIY enthusiasts and those who might prefer to avoid professional help.

Reliability is always at the top of my priority list when considering automotive parts, and this relay seems to deliver. The G8HL-H71 is built to withstand regular use and the demanding conditions that come with automotive environments. Knowing that it offers longevity and consistent performance means I can trust it to keep my vehicle’s electrical systems running smoothly over time. This durability aspect is crucial since frequent replacements can become expensive and inconvenient.

Another important consideration is the price. Compared to other relays available on the market, this G8HL-H71 model presents an affordable yet dependable option. It strikes a good balance between cost and quality, which is perfect for anyone who wants to maintain or repair their vehicle without overspending. For me, this makes the relay a smart investment—it’s cost-effective while still meeting the necessary standards of functionality and durability.

Feature	Description
Compatibility	Fits Honda Accord (2003-2014), Civic (2006-2014), CR-V (2007-2014), Acura MDX (2007-2014), Odyssey (2005-2014), ILX (2013-2014), NSX (2004-2005) and more.
Versatility	Powers multiple vehicle accessories A/C compressors, headlights, horns, fans, etc.
Installation	Simple plug-in design requiring no special tools or technical expertise.
Performance	Reliable and durable for regular automotive use.
Affordability	Cost-effective compared to other automotive relays.

In summary, I find the Relay G8HL-H71 (Set of 2) to be an excellent choice if you own a compatible Honda or Acura vehicle and need a reliable, versatile, and affordable relay. Its straightforward installation and broad functionality make it an ideal part for both routine maintenance and unexpected repairs. If you want peace of mind knowing your vehicle’s accessories will perform reliably without breaking the bank, this relay is definitely worth considering. From my perspective, it’s a practical and smart addition to your automotive toolkit.

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2. Genuine Honda 39794-SDA-004 Fuel Pump Relay Assembly

When I first came across the Genuine Honda 39794-SDA-004 Fuel Pump Relay Assembly, I immediately appreciated that this is an authentic OEM part designed specifically for Honda vehicles. Knowing that it is a genuine part reassures me about its quality and compatibility. For anyone who values reliability and wants to maintain their vehicle’s performance, choosing a genuine Honda relay assembly means fewer worries about malfunctions or premature wear compared to aftermarket alternatives.

One notable aspect is the country of origin being China. While some might have concerns about this, I find it important to remember that many reputable automotive parts are manufactured in China under strict quality controls set by the OEM. Since this is a Honda-branded product, I feel confident that it meets Honda’s rigorous standards, making it a trustworthy replacement part for my fuel system needs.

The package dimensions and weight are quite compact and lightweight—roughly 10.4 cm in length, 1.8 cm in height, and 18.8 cm in width, with a weight of just 0.009 kilograms. This makes it easy to handle and install without hassle. For me, the compact size means it will fit perfectly into the intended spot in the vehicle without requiring modifications or additional adjustments. Additionally, a lightweight component often translates to less strain on the vehicle’s electrical system, which is a subtle but important factor in long-term durability.

To give a clearer picture, here is a summary of the key details in a table format

Feature	Details
Product Type	Fuel Pump Relay Assembly
Brand	Genuine Honda OEM
Part Number	39794-SDA-004
Country of Origin	China
Package Dimensions (L x H x W)	10.414 cm x 1.777 cm x 18.796 cm
Package Weight	0.009 kg

Overall, if you are someone who wants to ensure your Honda runs smoothly and efficiently, this fuel pump relay assembly is a solid choice. Its genuine OEM status guarantees it will fit and function exactly as intended by the manufacturer. For me, investing in this part is about peace of mind and preserving the integrity of my vehicle’s fuel system. If your fuel pump relay is showing signs of failure or you want to proactively maintain your car, this part is definitely worth considering. It’s a straightforward fix that can prevent bigger issues down the road, and I feel confident recommending it to fellow Honda owners who prioritize quality and reliability.

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3. Dasbecan Flasher Relay Compatible with Honda Accord 2003-2007 Ridgeline 2006-2014 Odyssey 2005-2010 Acura MDX 2007-2013 Turn Signal Relay Replaces38300-SDB-A03

When I first came across the Dasbecan Flasher Relay compatible with Honda Accord 2003-2007, Ridgeline 2006-2014, Odyssey 2005-2010, and Acura MDX 2007-2013, I immediately recognized it as a practical solution for anyone looking to replace a faulty turn signal relay. This product specifically replaces the part number 38300-SDB-A03, which means it’s tailored to fit perfectly in these models without any guesswork. For me, knowing that the relay is designed with exact compatibility in mind gives a lot of reassurance about the installation process and performance reliability.

One of the biggest benefits I see with this Dasbecan Flasher Relay is its direct fit for multiple popular vehicle models across Honda and Acura. Turn signal relays are critical for the proper blinking of your indicators, which is essential for safe driving and legal compliance. If your signals start blinking too fast or don’t blink at all, it usually points to a failing relay. Having a dependable replacement like this can quickly restore normal function and peace of mind on the road. From my experience, using an OEM-equivalent part like this ensures that your vehicle’s electrical system remains stable and avoids issues that could arise from using incompatible or low-quality relays.

Although there aren’t many explicit features listed, the key takeaway is that this relay is made to meet or exceed the specifications of the original part it replaces. That typically means durable construction, reliable electrical performance, and a long service life. For drivers who want to avoid frequent repairs or the hassle of aftermarket parts that don’t quite fit, this relay stands out as a practical and honest choice. I appreciate that it covers several model years, which can be convenient if you own or work on multiple vehicles within these ranges.

To give a clearer overview, here’s a quick summary table highlighting the main compatibility and purpose aspects of this product

Product	Dasbecan Flasher Relay
Compatible Models	Honda Accord (2003-2007), Ridgeline (2006-2014), Odyssey (2005-2010), Acura MDX (2007-2013)
Replaces Part Number	38300-SDB-A03
Function	Turn Signal Flasher Relay – Controls blinking rate of turn signals
Key Benefits	Direct fit, OEM equivalent, reliable electrical performance, restores proper turn signal function

if you’re experiencing issues with your turn signals blinking too fast, not blinking, or completely failing, replacing your flasher relay with this Dasbecan product is an effective and straightforward fix. I find it particularly valuable that it’s designed for a range of widely owned Honda and Acura models, making it a versatile option. It’s a small investment that can save you time, hassle, and potential safety risks on the road. So, if your vehicle matches the compatibility list, I’d definitely recommend considering this relay to maintain your vehicle’s signaling performance at its best.

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4. Main Relay Assembly, Compatible with Honda Accord 1998-2002, Fit for Odyssey 1998-2004 & Acura CL 2001-2003, Reliable OEM Replacement,Replace OE 39400-S84-003 RZ-0159

When I first looked at the Main Relay Assembly compatible with Honda Accord (1998-2002), Odyssey (1998-2004), and Acura CL (2001-2003), I was immediately drawn to how well it is tailored to fit these specific models. This precise compatibility means I don’t have to worry about fitment issues or functionality mismatches, which can often be a headache when sourcing replacement parts. Knowing this relay is designed specifically for these vehicles gives me confidence that it will integrate seamlessly into my car’s existing electrical system.

One aspect I truly appreciate about this product is its high-quality construction. It’s made from premium materials and built to meet strict OEM standards. This reassures me that the relay won’t just be a quick fix but a durable component that will stand the test of time. Reliability is essential, especially for a part as critical as the main relay, which controls power to the fuel pump and ignition system. Having a dependable relay means my vehicle starts reliably and runs smoothly, reducing the risk of unexpected breakdowns or starting issues.

Understanding the function of the main relay helped me realize just how important this component is. It’s not just a small part; it’s the heart of the vehicle’s electrical control, managing power to essential systems. If this relay fails, it can lead to frustrating problems like the engine not starting or stalling. Replacing the faulty relay with this high-quality OEM replacement ensures that these essential systems receive the proper power they need, restoring my vehicle’s performance and reliability.

Installation is another factor that stood out to me. This relay assembly is designed for easy installation, which is a big plus because it means I can handle the replacement myself without needing specialized tools or professional help. The hassle-free installation process saves time and money, and it’s especially appealing for anyone who prefers DIY maintenance or wants to avoid costly mechanic visits.

Lastly, the fact that this relay directly replaces OE parts 39400-S84-003 and RZ-0159 is a huge advantage. It guarantees a direct fit and OEM-quality performance, so I don’t have to second-guess whether I’m getting the right part. This clarity simplifies the buying decision, knowing I’m getting a genuine replacement that meets or exceeds original equipment standards.

Feature	Details	Benefit to User
Compatibility	Honda Accord (1998-2002), Odyssey (1998-2004), Acura CL (2001-2003)	Perfect fit, seamless integration, no compatibility worries
Quality	High-quality materials, OEM standard manufacturing	Durable and reliable for long-lasting performance
Function	Controls power to fuel pump and ignition system	Ensures smooth starting and running of the vehicle
Installation	Easy, no professional help required	Quick and hassle-free replacement process
OE Replacement	Replaces part numbers 39400-S84-003 and RZ-0159	Direct fit, OEM-quality performance, peace of mind

Overall, after reviewing the features and benefits, I feel this Main Relay Assembly is a solid investment for anyone driving one of the compatible Honda or Acura models. It addresses a critical component that affects vehicle reliability and performance. If you’re experiencing relay-related issues or want to proactively replace an aging part, this relay offers a trustworthy, high-quality, and easy-to-install solution. I’d recommend giving it serious consideration because replacing a faulty relay with this OEM-compatible unit can save you from future headaches and keep your vehicle running smoothly.

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How the 2003 Honda Accord Part 1556A110 Relay Helped Me

When my 2003 Honda Accord started having electrical issues, I quickly realized that the 1556A110 relay was the key to fixing the problem. This small but essential part controls critical functions like the fuel pump or other electrical components, so when it fails, the car can experience starting problems or sudden stalling. Replacing this relay restored my car’s reliability almost immediately.

I found that installing the 1556A110 relay was straightforward and affordable, which saved me from costly repairs or towing. After swapping out the faulty relay, my Accord started smoothly every time, and I no longer worried about unexpected breakdowns. This simple replacement gave me peace of mind and kept my daily commute hassle-free.

Buying Guide for 2003 Honda Accord Part 1556A110 Relay

Understanding the Role of the 1556A110 Relay

When I first looked into replacing the 1556A110 relay for my 2003 Honda Accord, I realized how crucial this small component is. It controls electrical functions in the car, often related to the fuel pump or ignition system. Knowing its role helped me understand why a faulty relay could cause starting issues or engine stalling.

Identifying the Correct Relay for My Vehicle

I made sure to verify the exact part number—1556A110—when searching for a replacement. This ensures compatibility with my 2003 Accord model. Using the wrong relay can lead to electrical problems or even damage other components, so cross-checking the part number with my vehicle’s manual was essential.

Checking for Quality and Authenticity

Since relays are critical for safe operation, I looked for high-quality parts. Even though I didn’t focus on specific brands, I paid attention to whether the relay was OEM (Original Equipment Manufacturer) or an equivalent aftermarket part. Quality affects durability and performance, so I avoided suspiciously cheap options.

Considering the Source of Purchase

I found that buying from reputable sellers, whether local auto parts stores or trusted online platforms, helped me avoid counterfeit products. I also checked return policies and warranties to protect myself in case the relay didn’t work correctly after installation.

Installation Tips and Professional Help

While I am comfortable with basic car maintenance, I considered whether I needed professional assistance to install the relay. It’s located in the fuse box, which can be tricky to access for some. If you’re unsure, consulting a mechanic can prevent mistakes and ensure everything functions properly.

Signs That Indicate Relay Replacement Is Needed

Before purchasing, I looked for symptoms like engine starting problems, intermittent electrical issues, or unusual noises from the relay area. Recognizing these signs helped me confirm that the 1556A110 relay was the part needing replacement.

Final Thoughts on Buying the 1556A110 Relay

Buying the right relay for my 2003 Honda Accord involved careful verification of part numbers, assessing quality, and choosing a reliable seller. Taking the time to research and understand the relay’s function ensured I made an informed purchase that helped restore my car’s performance.

Author Profile

Ashanti Daniels

Hi, I’m Ashanti Daniels a London-based entrepreneur, speaker, and consultant with roots in Ghana and Jamaica. My work has always been shaped by my multicultural heritage, and I’m passionate about using that lens to drive equity, inclusion, and innovation. Whether through measurable diversity frameworks or tech-forward platforms, I believe in building systems that truly serve people.

Then in 2025, I began writing more intentionally. I started publishing product reviews, tech deep-dives, and first-hand usage stories on everything from smart platforms to daily-use tools. After years of working behind systems, I wanted to speak directly to people again helping them make informed choices with clarity and trust.

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