1988–2000 OBS Chevy to LS Harness Integration Service GEN 3 and GEN 4

Myatt Motorsports Professional OBS Chevy LS Integration Service. Trust your swap to a master mechanic with 29 years of experience and hundreds of successful conversions.

Streamline your 1988–2000 GMT400 (OBS) Chevy/GMC LS swap with a seamless, factory-finish wiring integration. Don't waste days battling electrical headaches or generic adapters. Send us your factory OBS truck harness and your LS harness, and we will custom-tailor and integrate them into a true plug-and-play solution built specifically for your vehicle.

What's Included in the Service

• Full OBS & LS Integration: Merges your original OBS chassis harness with your engine harness for functional gauges, key-on power, starters, and factory dash integration.
• Standalone Engine Conversion: Converts your LS harness into a simplified setup with integrated fuses, relays, OBD2 diagnostic port,
• Wiring Cleanup: Removes all unused, redundant wiring for a clean, factory-appearing engine bay and effortless diagnostics.
• Custom Looming & Tape: Fully re-wrapped in professional-grade, high-temp flame retardant wire loom.
• Full Labeling: Every major connector group is clearly labeled for a stress-free installation.
• Direct Tech Support: Direct access to a 29-year experienced mechanic for installation guidance and troubleshooting.

The Myatt Motorsports Difference

How It Works

1. Purchase & Ship: Buy the service and ship us BOTH your factory OBS truck harness and your LS GEN 3 or GEN 4 harness.
2. Conversion & Integration: We perform the full standalone conversion and integration within 10 business days (current lead time).
3. Return Shipping: We ship your complete integrated harness back via USPS or UPS with tracking included.