Mon to Sat 8:00 to 17:30 GMT+8Established 2001 in Dongguan China
Automotive Wiring Harness

Dual Electric Fan Upgrade Wiring Harness For GM Trucks

A wiring harness kit for dual electric cooling fan upgrades on 1999 to 2006 GM vehicles, wired for ECU fan control. Converting from a mechanical fan frees engine power, but the fans need a proper relay and control loom to switch safely.

  • Relay and control circuits sized for dual electric fan current draw
  • ECU control wiring lets the factory computer switch the fans
  • Pre-terminated kit removes home-made relay wiring under the bonnet
  • Built for the 1999 to 2006 GM platform range

Samples ship within 3 days of confirmation. Bulk lead time is typically 7 to 12 days.

Problems It Solves

  • Home-made fan wiring melts when the relay is undersized
  • Manual fan switches leave the engine unprotected in traffic
  • Loose relay boxes rattle free in the engine bay

Who It Is For

  • Performance and repair workshops
  • Cooling system upgrade suppliers
  • Aftermarket GM parts distributors

Application Scenarios

  • Mechanical to electric fan conversions
  • Cooling upgrades on towing and performance builds
  • Workshop fan replacement jobs

Technical Features

  • Dual fan relay circuit
  • ECU fan control wiring
  • 1999 to 2006 GM application
  • Pre-terminated kit

Specifications

ApplicationGM 1999 to 2006 electric cooling fan upgrade
ControlECU controlled
ConfigurationDual fan
MOQ50 PCS

Values shown are the standard build. Connector family, conductor gauge, circuit count and finished length are all build options.

Quality Control And Certification

  • Continuity And Circuit Verification. Verifies the physical arrangement sequence of the harness terminals and the circuit topology between them
  • Circuit Configuration Verification. Confirms that a complete, uninterrupted current flow path exists within each circuit
  • Terminal Retention Strength Test. Measures the mechanical reliability of the connection between the terminal and the wire
  • Ingress Protection Rating Test. Evaluates the dust and water resistance sealing performance of harness connectors

The company is certified to IATF 16949 and UL standards. Samples are confirmed prior to trial or mass production, and the approved sample is the reference for every repeat order.

Customization Options

  • Connector family and terminal type to your part numbers
  • Conductor gauge selected from the current per circuit
  • Finished length and breakout positions to your drawing
  • Jacket colour, marking and labelling to your scheme
  • Packing to your instruction, PE bag and carton as standard

Compared With The Alternatives

Manual toggle fan wiring

ECU control switches the fans on coolant temperature without driver attention

Generic relay kits

Circuits are sized and terminated for the dual fan current draw

Use Guide

  • Mount the relay assembly away from exhaust heat and clear of moving parts
  • Use the supplied fusing rather than substituting a higher rating
  • Confirm fan rotation direction before final assembly
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Dual Electric Fan Upgrade Wiring Harness For GM Trucks FAQ

Does it work with aftermarket fans?

Send the fan current draw and we confirm the relay and fusing before you order.

What is the minimum order?

This kit starts at 50 PCS.

Do you accept small batch orders of Dual Electric Fan Upgrade Wiring Harness For GM Trucks?

Yes. Small batch orders are accepted and quoted case by case. Our production lines are set up for small batch, multiple variety work rather than only long runs.

What quality system do you work to?

Dongguan JiaFu Automobile Accessories Co., Ltd is certified to IATF 16949 and UL standards, and harness testing covers continuity, circuit configuration, terminal retention strength and ingress protection rating.

Can you mark or label the circuits on Dual Electric Fan Upgrade Wiring Harness For GM Trucks?

Yes. Send your labelling scheme with the order and both ends are marked to it, which makes commissioning and later service much faster.

Get A Price On Dual Electric Fan Upgrade Wiring Harness For GM Trucks

Tell us the quantity, the finished length and any change to the connector set. We come back with the price, the lead time and a sample plan.