# Yamaha 1.8L Regulator Rectifier 15-412A – SBT Short Cable Replacement
The **Yamaha 1.8L Regulator Rectifier 15-412A** is a new aftermarket OE replacement electrical component manufactured by **SBT**, designed for compatible Yamaha 1.8L personal watercraft from **2013-2017**.
Featuring a **short cable configuration**, this regulator/rectifier replaces Yamaha OEM part numbers **6S5-81960-10-00 and 6S5-81960-11-00**.
The regulator/rectifier is an essential component of the watercraft’s electrical charging system, helping regulate electrical voltage and convert generated alternating current (AC) into direct current (DC) for the battery and onboard electrical systems.
Whether you’re diagnosing charging issues, replacing a faulty original regulator or carrying out electrical repairs, the SBT 15-412A provides a replacement option for compatible Yamaha 1.8L engines.
## Product Details
– **Brand:** SBT
– **SKU:** 15-412A
– **Product Type:** Voltage Regulator / Rectifier
– **Engine Application:** Yamaha 1.8L
– **Model Years:** 2013-2017
– **Cable Configuration:** Short Cables
– **Replaces OEM:** 6S5-81960-10-00, 6S5-81960-11-00
– **Replacement Type:** Aftermarket OE Replacement
– **Condition:** New
## Compatible Yamaha Applications
The **Yamaha 1.8L Regulator Rectifier 15-412A** is listed for compatible Yamaha 1.8L personal watercraft applications from:
– 2013
– 2014
– 2015
– 2016
– 2017
**Important:** Not every Yamaha 1.8L model within these years necessarily uses the same regulator/rectifier.
Please verify your original OEM part number, electrical connector and short cable configuration before purchasing.
## Features & Benefits
– **SBT Replacement Component:** New aftermarket regulator/rectifier manufactured by SBT.
– **Yamaha 1.8L Application:** Designed for compatible Yamaha 1.8L watercraft.
– **Short Cable Design:** Features the specified short cable configuration.
– **OE Replacement:** Replaces Yamaha OEM numbers 6S5-81960-10-00 and 6S5-81960-11-00.
– **Voltage Regulation:** Helps maintain the charging system’s intended electrical voltage.
– **AC to DC Conversion:** Converts generated alternating current into direct current.
– **Charging System Repairs:** Suitable for replacing faulty or damaged original regulator/rectifier units.
– **Electrical Maintenance:** Useful when diagnosing and repairing compatible Yamaha charging systems.
## What Does a Regulator Rectifier Do?
The **Yamaha 1.8L Regulator Rectifier 15-412A** performs two important functions within the watercraft’s charging system.
### Voltage Regulation
The regulator helps control the electrical voltage supplied by the charging system.
Without proper voltage regulation, electrical components and the battery may be exposed to unsuitable charging voltages.
### AC to DC Conversion
The rectifier converts alternating current (AC) generated by the engine’s charging system into direct current (DC).
This allows the generated electrical energy to be used by the battery and compatible onboard electrical systems.
Both functions are essential for maintaining normal charging system operation.
## Signs of a Faulty Regulator Rectifier
A damaged or failing regulator/rectifier may cause electrical and charging problems.
Common symptoms include:
– Battery failing to charge correctly
– Battery repeatedly going flat
– Charging voltage outside the recommended range
– Intermittent electrical problems
– Electrical warning messages
– Overcharging or undercharging
– Difficulty starting due to insufficient battery charge
These symptoms may also be caused by a faulty battery, stator, damaged wiring or poor electrical connections.
Proper electrical testing is recommended before replacing the regulator/rectifier.
## Why Replace Your Yamaha Regulator Rectifier?
Personal watercraft electrical components operate in demanding environments where heat, moisture and vibration may contribute to deterioration over time.
A faulty regulator/rectifier can prevent the charging system from operating correctly.
Replacing a defective component with a compatible OE replacement helps restore the charging system’s intended operation.
The **Yamaha 1.8L Regulator Rectifier 15-412A** provides an SBT aftermarket replacement for the specified Yamaha OEM references.
## Short Cable Configuration
This regulator/rectifier is supplied with a **short cable configuration**.
Cable length and connector arrangement are important when selecting electrical replacement parts.
Before ordering, compare the original component with the replacement to confirm:
– OEM part number
– Cable length
– Electrical connectors
– Mounting arrangement
– Engine and model compatibility
**Important:** This product is specifically listed as the short cable version. Do not assume it is interchangeable with long cable regulator/rectifier assemblies.
## Important Installation Information
Before installing the replacement regulator/rectifier:
1. Disconnect the battery before working on the electrical system.
2. Confirm the original OEM part number.
3. Compare the cable length and connectors.
4. Inspect the wiring harness for corrosion or damage.
5. Remove the faulty regulator/rectifier.
6. Install the replacement according to the applicable Yamaha service manual.
7. Ensure all electrical connections are secure.
8. Reconnect the battery and verify charging system operation.
Professional installation is recommended if you are unfamiliar with marine electrical systems.
## Important Fitment Information
**Brand:** SBT
**SKU:** 15-412A
**Product:** Regulator / Rectifier
**Engine:** Yamaha 1.8L
**Listed Years:** 2013-2017
**Cable Type:** Short Cables
**Replaces OEM:** 6S5-81960-10-00 / 6S5-81960-11-00
**Condition:** New
Please confirm your exact Yamaha model, year, OEM part number and cable configuration before purchasing.
This listing is for the **regulator/rectifier only**. Other charging system components are not included unless specifically stated.
The **Yamaha 1.8L Regulator Rectifier 15-412A** is a new SBT aftermarket OE replacement designed for compatible Yamaha 1.8L personal watercraft, providing a suitable option for charging system maintenance and electrical repairs.
