MECMO Brake Control Wiring Adapter for 2003-2007 GM Trucks & SUVs — Black plug-and-play harness, corrosion-resistant

The MECMO 3015-P is a plug-and-play brake-controller wiring adapter designed to connect aftermarket electric brake controllers to 2003–2007 GM trucks and SUVs without cutting or splicing factory wiring.

If you tow with a compatible GM vehicle equipped with the factory tow package, this adapter simplifies installation of a time-delayed or proportional brake controller by matching the factory connector to the controller's port. The harness uses OEM-style plugs on both ends so the brake controller can be installed or removed quickly, and its durable construction helps resist corrosion and road wear.

Which GM vehicles will this adapter fit?

This adapter is built for GM models that came with a factory tow package in the mid-2000s. It supports Cadillac Escalade, Hummer H2, a range of Chevrolet trucks and SUVs, and GMC full-size trucks and Yukon models from the specified years. Always verify your vehicle’s factory connector and tow package before purchase.

• Cadillac Escalade: 2003–2006
• Hummer H2: 2003–2007
• Chevrolet Avalanche, Silverado, Suburban, Tahoe: 2003–2006 (Silverado Classic 2007)
• GMC Sierra, Yukon, Yukon XL: 2003–2006 (Sierra Classic 2007)

What brake controllers are compatible with the MECMO 3015-P?

The harness supports both time-delayed and proportional types that use a rear-facing wiring port. It is compatible with many popular models from Draw-Tite and Tekonsha, provided the controller has the integrated port. Check your controller’s specifications to confirm port compatibility.

• Time-delayed examples: Draw-Tite Activator I/II/III and Tekonsha PowerTrac
• Proportional examples: Tekonsha Prodigy, P2, P3, Primus IQ, and Voyager
• Works with controllers that accept a plug-in harness at the controller rear

How simple is installation, and can I remove the controller later?

Installation is straightforward: the harness plugs into the vehicle’s factory tow connector and into the brake controller—no hardwiring, soldering, or splicing needed. Because both ends are detachable, you can remove the controller without altering the vehicle wiring, which preserves factory integrity and makes swaps fast.

• Plug-and-play—no cutting or tapping into factory wires
• Removable for security or when the controller isn’t needed
• Reduces risk of electrical shorts compared with custom splices

What materials and durability features does the harness include?

The MECMO harness uses corrosion-resistant terminals and a protective outer sleeve to withstand the elements and daily towing use. Quality components help maintain reliable electrical connections and signal integrity for brake controller performance over time.

• Pure copper terminals for good conductivity
• PVC housing around connectors for mechanical protection
• Black nylon braided tube for abrasion resistance and routing

Who this is for: The MECMO 3015-P is intended for owners of compatible 2003–2007 GM trucks and SUVs who want a fast, reversible way to add an aftermarket electric brake controller. It’s ideal for DIY installers, fleet vehicles needing temporary controllers, or anyone who prefers preserving factory wiring while adding towing functionality.