Redarc Trailer Brake Controllers for up to 2 axles
Keep your cab uncluttered with Redarc controllers for up to 2 axles. Mount the main unit out of sight and use a small dash knob for setup, push-to-apply manual braking, and self-calibration that dials itself in smoothly. Installs range from a factory connector to splicing under the dash or tying into the cold side of a brake fuse, so matching your vehicle is straightforward.
Yes—don't assume the brake light switch is the right tap. On some vehicles, tapping the switch can trigger warnings or codes; use a fused brake circuit at the fuse box or the brake output from the trailer wiring converter instead. Verify you're on the cold side of the fuse and use a safe fuse tap. Secure grounds and confirm polarity before power-up.
It self-calibrates after you mount it and start driving. Expect the status light to strobe between colors while it learns orientation, then go solid when it's done. Give it a few minutes, then connect your trailer and fine-tune with the knob. If it seems off, recheck the mounting angle and ensure the unit is firmly secured.
You'll upgrade to a 7-way and run power, ground, brake controller, and accessory wires. The 4-way remains for lights while the 7-way adds the brake and charge circuits. Plan a clean route through the firewall for the controller wire; if one pass-through is too tight, choose another accessible spot. Avoid splicing at the brake light switch if it causes issues.
It tucks the main unit under the dash and uses a small dash knob for control. Mount the brain on a flat surface out of the way and choose a knob spot that won't catch your knee. Space for the knob can be tight on some dashes, so test-fit before drilling. If your vehicle has a factory connection, you can keep wiring tidy and plug in there.
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