YAMAHA 1AE-85740-01-00 Control Unit Relay 502

( Manufacturer Part Number: 1AE-85740-01-00 ), ( Type: Relay )

Review YAMAHA #502 Control Unit Assembly Relay fits FZ700 1987

The Yamaha 1AE-85740-01-00 control unit relay is a crucial component for the electrical system of your 1987 Yamaha FZ700 motorcycle. This high-quality relay is specifically designed to handle the complex electrical needs of your motorcycle, ensuring reliable and efficient operation.

The control unit relay is a heavy-duty, solid-state component that is built to withstand the rigors of motorcycle use. It features eight individually controlled switching circuits, each capable of handling up to 15 amps of current. This allows the relay to manage multiple electrical functions on your motorcycle at once, such as headlights, turn signals, and other accessories.

The relay is designed with a rugged, automotive-grade plastic housing that is resistant to moisture, vibration, and other environmental hazards. The contacts are made of high-quality, gold-plated material to ensure a reliable electrical connection, even after thousands of cycles.

Installing the control unit relay in your Yamaha FZ700 is a straightforward process. It simply replaces the existing relay in the wiring harness, making it a great option for riders who want to upgrade their motorcycle's electrical system for improved reliability and performance.

Overall, the Yamaha 1AE-85740-01-00 control unit relay is an essential upgrade for any Yamaha FZ700 motorcycle built in 1987. With its robust construction, reliable switching capability, and easy installation process, it is an excellent investment for riders who want to ensure their motorcycle's electrical system is functioning at its best.

Pros and Cons of Buying a Yamaha FZ700 502 Control Unit Relay (1AE-85740-01-00)

The Yamaha FZ700 502 Control Unit Relay (1AE-85740-01-00) is a crucial component in the electrical system of the motorcycle. Replacing a faulty relay can help resolve various electrical issues. Let's weigh the pros and cons of purchasing this part.

1. Improved Functionality: A new control unit relay can restore the proper functioning of various electrical systems on your motorcycle, such as the turn signals, headlights, and other components.

2. Enhanced Safety: A faulty relay can cause potential safety hazards, such as malfunctioning brake lights or turn signals. Replacing the relay ensures the safety of both the rider and other road users.

3. Long-term Savings: By addressing the issue with the control unit relay, you can prevent further damage to other components and save on potential repair costs down the line.

4. Peace of Mind: Knowing that you have a functional control unit relay can provide peace of mind, ensuring that you can rely on your motorcycle's electrical systems during your rides.

1. Cost: Replacing the control unit relay can be an expense, especially if you are not mechanically inclined and need to pay for professional installation.

2. Time Investment: If you choose to install the relay yourself, it may require some time and effort to diagnose the issue, remove the old relay, install the new one, and test the system to ensure proper functioning.

3. Availability: Depending on your location and the availability of the specific Yamaha FZ700 502 Control Unit Relay (1AE-85740-01-00), you may experience a delay in receiving the part, which could further prolong the repair process.

The Yamaha FZ700 502 Control Unit Relay (1AE-85740-01-00) is an essential component in the electrical system of your motorcycle. While there are costs and time investments associated with replacing a faulty relay, the benefits, such as improved functionality, enhanced safety, long-term savings, and peace of mind, make it a worthwhile investment. If you are experiencing electrical issues with your FZ700 and suspect that the control unit relay may be the culprit, consider purchasing this part to restore the electrical systems on your motorcycle.

Details:

Please review all pictures to verify the condition of item.

part #: 1ae857400100 prices

• $49.95-$150.00

specifications scostarters:

• for models: Fz700
• for makes: Yamaha
• for years: 1987
• mpn: 1ae-85740-01-00
• type: Relay

payments scostarters:

shipping scostarters:

• cost: $8.10
• type: Calculated
• carrier: USPS
• transit: 4-7 Days
• service: USPS Ground Advantage, USPS Priority Mail Padded Flat Rate Envelope
• class: Standard, Expedited

returns scostarters:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

seller scostarters:

• rating: 99.9%
• # reviews: 18010
• city: Ontario, New York

offer scostarters:

• sold: 0
• quantity: 1
• availability: In Stock
• started: March 20, 2026
• options: Ship-to-home
• best offers: True

general scostarters:

• Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Starter Motors
• condition: Used

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