Brake Controller 7- and 4-Way Installation Kit ... - e trailer
2019-6-5u2002·u20025. Use a butt connector to connect the black wire in the duplex cable to the 12-volt hot lead (black wire) on the 7-way connector. Then do the same for the white wire in the duplex cable and the brake wire (blue wire) on the 7-way connector. Use electrical tape to keep the wires together and then install the black loom over the wires. 6.
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