Does Trailer Brake Controller Require Relay Installed
Updated 01/27/2026 | Published 08/23/2024
Question:
Hi, Does the controller need to work through a relay switch to operate the electric brakes at the wheels, or can it be wired directly to the wheel brakes? Hope that makes sense. Thanks. Gary
asked by: Gary B
0
Expert Reply:
Hey Gary, the brake controllers like the part # TK90160 that you referenced do not require a relay installed between them and the trailer brake assemblies. They will power the brakes directly via the brake output circuit.
expert reply by:
Jameson C
0
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Jameson C.
1/27/2026
Hey Gary, how did things go wiring the Primus IQ controller directly to your trailer brakes? Your update could make it easier for others setting up the same system.