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Hayman Reese SmartClick Waterproof Electronic Control Unit - ECU 12
Hayman Reese SmartClick Waterproof Electronic Control Unit - ECU 12

Hayman Reese SmartClick Waterproof Electronic Control Unit ECU 12

$322.36$260
Short delay, none in stock.
Order now for estimated dispatch on 7th Oct 2026.

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Description

Hayman Reese SmartClick waterproof ECU 12 is an electronic control module for compatible vehicle-to-trailer lighting installations. It works with the vehicle-specific patch loom and trailer socket tail, rather than replacing the complete wiring system.

Select the ECU specified for the vehicle's model, build date, variant and fitted loom. Waterproof construction and a matching connector do not establish interchangeability with ECU 10 or another SmartClick ECU.

For Holden Colorado applications listed under Hayman Reese 03231RW, ECU 12 is normally specified for models other than LTZ and Z71. There is an important wiring exception: a two-wire tail/brake light requires ECU 12, while a three-wire tail/brake light requires ECU 10. The actual light wiring therefore matters, not just the vehicle badge.

Features

  • 1 year warranty.

Specifications

  • Manufacturer Part Number: 04837
  • Brand: Hayman Reese
  • Barcode: 9321963140352
  • ECU connection: 24-way vehicle patch-loom connector.
  • Documented application example: Toyota HiAce LWB and SLWB vans from February 2019, with loom 102231-WL in Hayman Reese 03305RW installations; specified tail harness length is 400mm.
  • HiAce installation boundary: connect the loom earth to the specified vehicle earthing point, not directly to the battery negative post, because of the battery monitoring device.
  • Documented Colorado loom example: 100819-WL specifies ECU 12 for DX, LX and LT applications; apply the tail/brake-light wiring exception described above.
  • These are application examples, not a complete vehicle fitment list.

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Hayman Reese SmartClick Waterproof Electronic Control Unit - ECU 12

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