Oyviny Brake Controller Adapter 3015-P for 2003-2006 GM Trucks & SUVs, 4‑Pin Plug, 31in Plug-and-Play Harness

The Oyviny Brake Controller Adapter 3015-P is a plug-and-play wiring harness that lets you connect an aftermarket electric trailer brake controller to select GM trucks and SUVs without cutting or splicing.

If you tow trailers with a 2003–2006 Chevrolet Silverado, Suburban, Tahoe, Avalanche, GMC Sierra, Yukon, Cadillac Escalade, or a 2003–2007 Hummer H2, this adapter provides a factory-style connection point under the dash. It converts the vehicle’s OEM port to the standard 4-pin brake controller plug accepted by most popular controllers from Tekonsha, Reese, Draw-Tite and others. The harness is built for durability and designed to keep wiring tidy and reliable while preserving the vehicle’s factory wiring integrity.

How does this adapter simplify installation?

Oyviny’s adapter is pre-terminated to match the OEM dash connector and a standard 4-pin controller plug, so installation requires no wire cutting, splicing, or tapping into factory circuits. That reduces installation time and the risk of wiring mistakes that can affect brake performance. For most users, it’s a straight plug-in under the dash with no special tools needed.

• Direct-fit connector matches factory port beneath the dash
• 4-pin standard plug fits most aftermarket controllers
• 31-inch lead gives flexible routing without extension
• No splicing or vehicle wire modification required

Which brake controllers are compatible with this harness?

The harness uses the standard 4-pin brake controller connection accepted by a wide range of controllers. It is compatible with common models from Tekonsha, Draw-Tite and Reese, making it a versatile choice when swapping or upgrading controllers. Always confirm the controller uses a 4-pin industry standard plug before purchase.

• Tekonsha models: PowerTrac, Prodigy, P2, P3, Primus IQ, Voyager
• Draw-Tite Activator I/II/III series
• Reese Towpower models listed in product specs
• Other brands that accept the 4-pin standard plug

What materials and construction protect the wiring?

The adapter’s plugs are molded from durable ABS plastic with tin-plated copper terminals for improved corrosion resistance and conductivity. The internal conductors are pure copper for reliable current flow, and a black woven nylon sleeve shields the length of the harness to reduce abrasion and environmental wear. Those features help the adapter deliver steady electrical performance over time.

• ABS plastic connector housings resist cracking and heat
• Tin-plated copper terminals reduce corrosion
• Pure copper wires for strong conductivity
• Nylon braided sleeve for abrasion and moisture protection

Will the harness fit my vehicle and allow flexible placement?

The Oyviny 3015-P was produced to match the OEM ports used in specific GM trucks, SUVs and the Hummer H2 listed in the compatibility notes. Its 31-inch cable length provides room to position the controller where you prefer in the cabin while keeping connections tidy. Check fitment against your model year and dash connector location before ordering.

• Designed for 2003–2006 Chevy/GMC/Cadillac and 2003–2007 Hummer H2
• 31-inch harness length for flexible placement under dash
• Reduces potential for short circuits or cross wiring
• Preserves factory wiring integrity for resale and diagnostics

Who is this for? The Oyviny Brake Controller Adapter 3015-P is aimed at owners of the listed Chevy, GMC, Cadillac and Hummer models who want a clean, factory-friendly way to add or replace an electric trailer brake controller. It’s ideal for DIY installers, professional shops, and anyone who prefers a non-invasive, reversible wiring solution that works with most mainstream controllers.