MECMO Brake Controller Wiring Adapter for 2003–2007 GM Trucks & SUVs, Black, Plug‑and‑Play Harness

The MECMO 3015-P is a plug-and-play brake controller wiring adapter that connects compatible electric brake controllers to GM trucks and SUVs from the 2003–2007 model years without cutting or splicing.

If you tow with a GM vehicle equipped with the factory towing package, this adapter makes adding, removing or swapping a compatible electric trailer brake controller quick and reversible. It mates the vehicle’s factory connector to the controller’s built-in wiring port, maintaining a clean installation and reducing the need for permanent wiring changes.

Which GM vehicles does this wiring adapter fit?

This harness is designed for GM platforms sold with the factory tow package from the 2003–2007 era. It fits Chevrolet, GMC, Cadillac and Hummer models that use the same factory brake controller connector.

• 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)

Which brake controllers are compatible with this adapter?

The MECMO 3015-P supports both time-delayed and proportional controllers that use a rear-facing wiring port. Confirm your controller model before ordering to ensure the connector type matches.

• 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 plug into a built-in port on the controller’s rear housing

How simple is the installation and removal process?

Installation requires no cutting, splicing, or tapping into vehicle wiring — just plug the adapter into the factory port and into the brake controller. That makes it fast to install and easy to remove when you need to swap controllers or return a vehicle to stock condition.

• Plug-and-play connection: vehicle end into factory harness, controller end into controller port
• No permanent changes to vehicle wiring; fully reversible
• Allows quick disconnect for storage, service, or controller upgrades

What materials and construction ensure long-term reliability?

The harness uses quality electrical components and protective sleeving to resist corrosion and abrasion for dependable operation in towing conditions. Good conductivity and secure terminals help maintain consistent brake controller performance.

• Pure copper terminals for reliable electrical contact and conductivity
• PVC housing and black nylon braided sleeve for abrasion and weather resistance
• Factory-style connectors to reduce risk of loose or intermittent connections

Who is this for? The MECMO 3015-P wiring adapter is aimed at owners of mid-2000s GM trucks and SUVs with the factory tow package who want a clean, non-destructive way to install or remove an electric trailer brake controller. It’s ideal for DIY installers, fleet vehicles that may need temporary controller installations, and anyone who prefers plug-and-play hardware over permanent hardwiring.