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Proportional Brake Controller with Universal 51515 Wiring Pigtail
✅ In stock
⭐ Lowest price we've tracked
📉 Price recently dropped
A
Grade
Analysis Confidence
73%
🏷️ Price includes Coupon savings
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 17, 2026 1:36 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
🔥 Great Deal- 🔥Verdict: Great Deal. Strong buy. Price is significantly below its historical average.
- 💰At 17% off its standard going rate, this offer delivers clear value for the money.
- 🏷️The listed retail price is trimmed by 5% at checkout.
- 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
19.01/28
Recent Value
14.82/22
Market Standing
18.1/20
Deal Strength
20/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Meiling parts
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓[Advantages]: This controller is equipped with a three-axis accelerometer, which can sense the instantaneous inertia of the tractor and simultaneously transmit it to the trailer. Whether it is a slow deceleration or an emergency brake, it performs smoother than time-delay models, providing reliable stopping power for 1-4 axle trailers and thereby effectively reducing the load on the vehicle. As long as your vehicle features a 12V power supply, this unit can be easily installed using our universal wiring harness.
✓[Compatibility]: This system can manage 4 axes (8 brakes). The 24-inch long 51515 universal wiring harness, with industry-standard color coding,The TriFlex brake controller is highly adjustable to accommodate different vehicles, trailers and loads. It provides 9 levels of sensitivity adjustment and features driver-selectable power output and manual activation.
✓[Real-time Monitoring and Automatic Leveling]: The digital LED screen can provide real-time feedback on gain settings and system health status. It has an automatic leveling function and supports installation at various angles, eliminating the need for complex physical calibration. Even on bumpy mountain roads, it can maintain precise braking pressure;It is also fully compatible with cruise control, anti-lock brakes, low-voltage systems and PWM systems.
✓[Specifications]: This package includes the 51140 TriFlex proportional brake controller and the 51515 universal four-wire wiring harness. This allows for a customized installation on any vehicle equipped with a tow package. (Note: Cutting and splicing into vehicle wiring is required).
✓[Safety First - Manual Intervention]: This kit is equipped with an integrated manual slider. In case of emergency situations such as trailer swaying, the driver can immediately activate the trailer braking system manually to ensure driving safety. The built-in circuit protection function can prevent short circuits, ensuring the reliability of your car's electrical system.
⚙️ Specifications
A-Outstanding
A-Outsanding
TriFlex Electric Trailer Brake Controller
15.2 ounces
6.02 x 5.98 x 2.13 inches
51140 51515
Manufacturer
A-Outstanding
Brand
A-Outsanding
Model
TriFlex Electric Trailer Brake Controller
Item Weight
15.2 ounces
Package Dimensions
6.02 x 5.98 x 2.13 inches
Item model number
51140 51515
Manufacturer Part Number
51140 51515
ASIN
B0GL81VVGY