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Great, fast service. Got my order very promptly. Very pleased with my order and the spare parts ordered. Highly recommended.
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Hayman Reese SmartClick ECU 4 is a trailer-wiring control module for installations that specify this ECU. Match the vehicle and fitted loom, not just the module's connector.
For BMW X1 installations using loom 100854-WL, the brake and tail-light circuit arrangement determines the choice: separate circuits require ECU 4, while a shared circuit requires 04838 instead. This is a specific loom application rule, not a claim that ECU 4 suits every BMW X1 or every vehicle with separate lighting circuits.
Great, fast service. Got my order very promptly. Very pleased with my order and the spare parts ordered. Highly recommended.
Best RV parts supplier. Always great service and price.
Excellent service.