It starts at the transmission Connector C167 and the goes to the AUX 1 relay box, there is a relay C121 for the lights, Pin 1 is the control, 2 hot with PCM power relay energized. 3 Voltage at all times, 4 N, 5 relay output
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"Goldilocks" 2020 Ford Transit High Roof Extended 3.5 EcoBoost AWD Homebuilt