Description
Product Overview
The Total Power Parts 12V Negative Voltage Regulator (model LNP-R240103726S) is an electronic regulator built to OEM standards. Weighing only 6.4 ounces and measuring 4.5 x 3.38 x 2.5 inches, it fits compactly in your vehicle’s electrical bay. Engineered for 12‑volt systems with negative polarity, it activates with ignition and provides consistent voltage to protect sensitive electronics. ![[Product front view showing all components]](https://www.shadowgo.store/wp-content/uploads/2026/06/20c86ba50b41481e9bd64697e171fda6.jpg)
Usage
Ideal for powersports vehicles such as ATVs, UTVs, and small motorcycles, this regulator ensures stable power during high‑demand situations like hill climbs or off‑road riding. It replaces OEM part numbers PLR240103726S, 101900, 103726, and R240103726S, making it a direct fit for many popular models. Install it in the regulator circuit (Circuit A) and enjoy reliable performance in any terrain.
Why Choose Us
Our regulator is 100% new aftermarket, crafted to meet or exceed original specifications. The electronic design eliminates voltage spikes, extending the life of your battery and electronic accessories. A full 1‑year warranty backs every unit, and our dedicated support team is ready to assist with installation questions or replacement needs.
Key Features
- Precise 12V regulation ensures stable power for all onboard electronics
- Negative polarity design matches OEM requirements for seamless fit
- Compact size and lightweight construction simplify installation
- Durable electronic components resist heat and vibration in harsh environments
- 1‑year warranty and responsive customer support for peace of mind
FAQ
Is this regulator compatible with my ATV?
Yes, it replaces OEM part numbers PLR240103726S, 101900, 103726, and R240103726S, which are used in many ATV models. Check your vehicle’s service manual for the exact match.
Do I need to modify wiring to install this regulator?
No modifications are required. The unit plugs into the existing regulator circuit (Circuit A) and activates with the ignition signal.
What does the 1‑year warranty cover?
The warranty covers any defects in materials or workmanship. If the regulator fails within a year, we will replace it at no cost.
Can this regulator be used in marine applications?
It is designed for powersports and automotive use. For marine environments, we recommend a regulator specifically rated for water exposure.
How do I know if the regulator is functioning correctly?
After installation, use a multimeter to verify a steady 12‑volt output when the engine is running. Any significant fluctuation may indicate a problem.




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