Speedway 2004-2008 Vortec V8 Wiring Harness

Take the fear out of electronic fuel injection! These engine wiring harnesses are designed to make your engine transplant effortless. Each new harness contains in-depth application-specific instruction sheets, clearly marked factory GM connectors, labeled GXL jacketed wire, GM color coding, and pre-fitted corrugated slit loom for an extra value and professional look. All un-needed emissions wiring is eliminated to make the install as simple and reliable as possible.

2004-2008 Vortec V8 - Electric Throttle Body

• Made from premium grade GXL jacketed automotive wire
• Most wiring is larger gauge than stock application for durability
• No splices to reduce points of failure
• All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
• Harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
• All electrical connectors are made by Delphi or Packard and are direct fit for GM cars and trucks
• Can be installed to run engine in 20 minutes, but figure 4-6 hours for a professional installation
• Diagnostic connector or OBD2 port for connection to scanners and tuning tools

Instruction Guide (PDF)