LAJBZ Trailer Brake Controller Kit — Proportional Electronic Brake Control, Primus IQ Compatible, Self-Leveling

LAJBZ's Proportional Trailer Brake Controller Kit delivers smooth, inertia-based braking that mirrors your truck's deceleration for safer, more controlled stops when towing trailers up to three axles.

Designed for pickup trucks and SUVs from Ford, GM, Chevy, Dodge, RAM, Toyota and more, this proportional electronic brake control provides predictable braking performance without complicated setup. Its self-leveling inertial sensor removes mounting-angle guesswork, while the bright digital display and three boost settings make it simple to adapt braking feel to different trailer weights and road conditions. Compatible with trailers using 12V electric brakes (1–3 axles, up to six brake assemblies) and installs quickly with a vehicle-specific wiring harness (sold separately), it’s built for frequent haulers and recreational users alike.

How does this controller improve towing safety?

The LAJBZ controller measures your vehicle’s deceleration and applies proportional braking to the trailer, reducing jarring stops and improving stability. That smoother response lowers stress on trailer components and helps maintain control during sudden slowdowns.

• Inertia-based sensor provides braking that tracks vehicle slowdown.
• Three boost levels adjust for heavier trailers or steep grades.
• Manual override lets you apply trailer brakes independently when needed.
• Bright digital readout shows status and diagnostic alerts in real time.

What makes installation and setup straightforward?

The unit is engineered for a quick, user-friendly install: self-leveling means you don’t need precision angling and simple mounting hardware offers flexible placement. Wiring uses a plug-and-play style when paired with a vehicle-specific harness, and the control head adjusts within a broad range for driver comfort.

• Self-leveling sensor removes strict mounting angle requirements.
• Flexible bracket or snap-in clip mounting for dash or under-dash locations.
• 180-degree adjustment range for optimal driver access and sightlines.
• Compatible with commonly available vehicle harnesses (sold separately).

Which trailers and vehicles is the controller compatible with?

This LAJBZ kit supports 12V electric drum brake systems on trailers with one to three axles (maximum six brake assemblies). It’s designed to plug into most popular pickup trucks and SUVs when paired with the correct harness, offering broad cross-vehicle compatibility without needing vehicle-specific electronics.

• Works with single-, dual- and triple-axle trailers up to six brakes.
• Compatible with Ford, GM, Chevy, Dodge, RAM, Toyota, Jeep and many more.
• Supports standard 12V electric trailer brake systems.
• Harness for your vehicle required and sold separately for a plug-in fit.

How do the controls and diagnostics help during use?

The controller combines a clear digital display with straightforward controls so you can monitor performance and make quick adjustments. Built-in diagnostics and circuit protection give immediate feedback on connection status and prevent damage from electrical faults.

• Digital screen shows power, output level and fault indicators at a glance.
• Three selectable boost settings for fine-tuning brake intensity.
• Manual lever for instant, driver-applied trailer braking.
• Circuit protection guards the controller and trailer electrical system.

Who is this for? The LAJBZ Proportional Trailer Brake Controller is ideal for weekend boaters, RV owners, contractors hauling equipment, and anyone who tows trailers regularly and wants predictable, comfortable braking. If you tow trailers with 12V electric brakes and drive a compatible pickup or SUV, this unit gives adjustable, proportional control with straightforward installation and lifetime after-sales support, making it a reliable upgrade for safer towing.