1998-2005 3800 Supercharged Simplified harness

1998–2005 Supercharged 3800 Simplified Harness

Take the headache out of wiring your 3800 swap with this plug-and-play simplified harness, purpose-built for the supercharged L67/L32 3800 engines (1998–2005). Designed with reliability and ease-of-use in mind, this harness eliminates unnecessary circuits and streamlines the install so you can focus on performance, not wiring diagrams.

Key Features:

• ✅ Direct Fit: Built to integrate with GM 3800 Supercharged engines Series I & II from 1998–2005. (2004-2005 series 3 Grand Prix take a different harness) 
• ✅ Simplified Layout: Only the essentials are included—no clutter, no wasted wires.
• ✅ High-Quality Materials: New connectors, heavy-duty loom, and proper soldered joints for durability.
• ✅ Plug-and-Play Ready: Labeled leads and easy hookup for ignition, fuel pump, power, and grounds.
• ✅ Derby & Swap Friendly: Perfect for demolition derby builds, race cars, or custom swaps where reliability and quick setup are critical.

Why Choose This Harness?

Instead of spending hours tracing factory wiring or fighting brittle old harnesses, this setup gives you a clean, dependable, and easy-to-install solution. Whether you’re building a derby car, a project swap, or just want a simpler setup for your supercharged 3800, this harness is the fastest path to a running engine.