What To Do With The Blue Wire From The ETBC7 If Installing The Curt Echo # C51180
Updated 12/15/2025 | Published 11/18/2024
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Question:
Part Number: ETBC7 Part Number: C51180 I understand that the existing 4-pin will connect to the 4-pin, the black wire connects to postive terminal, the white wire conencts to negative terminal and the yellow wire if I chose to is the reverse lights. My question is about the blue wire which connects to the brake controller. Because I am using the Curt Echo, does the blue wire then connect to the wire above the brake pedal that engages the brake lights when activated?
asked by: Billy P
Expert Reply:
Hey Billy,
Since you're going with the curt Echo # C51180 the blue wire from the # ETBC7 would have nothing to connect to so you can just cap off the blue wire with some electrical tape. If you ever decide to install a hardwired brake controller you can just remove the tape and run a 10 gauge wire # 10-1-1 from the blue wire up into the cab to the brake controller's wire harness. The Curt Echo # C51180 uses the 12v power pin and and inertia to activate.
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Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
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- Trailer Brake Controller
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John H.
12/15/2025
Hey Billy, how did things go with capping off the blue wire from your ETBC7 while using the Curt Echo controller? Your results could really help others setting up the same combo.