Brake Controller and Anderson Plug Installation for a 2025 Land Rover Defender

Challenge

When towing heavy loads, you need a reliable way to control your trailer’s movement. Without a separate trailer brake system, your vehicle’s brakes do more work. This can mean longer stopping distances and less control, especially when driving downhill.

Another challenge is keeping your trailer powered while you drive. Modern vehicle electrical systems are sensitive, and pulling a lot of current for things like extra batteries or fridges without a proper fused circuit can cause voltage drops or interference. This might leave your gear underpowered when you arrive.

Solution

The Redarc Tow-Pro Elite V3 gives you precise control over your trailer brakes. It has two modes: proportional and user-controlled. Proportional mode matches the trailer’s braking to your vehicle for smooth stops. User-controlled mode lets you adjust the brakes yourself, which helps off-road when you need extra stability.
The 50A Anderson Plug is a strong connector for high-current power between your vehicle and trailer. It keeps the connection secure, even on bumpy roads. With heavy-duty cables and a voltage-sensitive relay, your auxiliary batteries get a steady charge.

Having experienced technicians do the installation is important. The 2025 Land Rover Defender has complex electronics and delicate interiors, so wiring mistakes can cause faults or affect safety systems. The Adventure Additions team follows Australian safety standards and makes sure cables are routed and secured to prevent damage. This careful work keeps your warranty safe and ensures everything works properly.
Execution

The Adventure Additions Team began by choosing the best place to mount the Redarc main unit. They put the remote head in the dashboard so the driver can reach it easily without blocking other controls. For the wiring, they used a harness designed for this vehicle to connect to the factory electrical system.

For the Anderson plug, the team installed a 140-amp voltage-sensitive relay. This component isolates the start battery from the auxiliary circuit to prevent accidental discharge. Technicians ran 8-gauge red and black battery cables from the engine bay to the rear of the vehicle. They used a custom bracket to mount the 50A Anderson housing securely near the tow bar. All connections were fused with a 50A Midi fuse for circuit protection. The technicians finished the installation by testing the voltage output and checking the brake controller calibration.

Duration

The whole installation at the Braeside facility took about 5 hours.

Results
The Land Rover Defender now features a fully integrated towing electrical suite. The Redarc brake controller provides the driver with adjustable braking force for trailers of varying weights. The Anderson plug delivers a steady 50-amp power supply to the rear of the vehicle. All components are mounted discreetly to maintain the aesthetic of the interior and exterior.