Painless Wiring 60218 LS Engine Fuel Injection Wiring Harness 4.8L 5.3L 6.0L

The Painless Wiring 60218 is a complete fuel injection wiring harness designed specifically for GM LS engine swaps using 1999-2006 4.8L, 5.3L, and 6.0L engines with mechanical throttle bodies. This harness is engineered to work with LS1/LS6 PCM controllers and supports both automatic transmissions (4L60E, 4L65E, 4L70E, 4L80E, 4L85E) and manual transmission applications.

Key Features:

• Extended 8-foot length from intake manifold to fuse block and ECM mounting location, ideal for mounting components under seats or in center consoles
• Integrated 10-circuit weatherproof fuse block with labeled, GM color-coded wiring for simplified installation
• Dual 40-amp ignition relays for reliable power distribution
• Complete plug-and-play connections for all essential engine management components
• Designed for Delphi Multec 2 (factory truck style) injectors—does not support Flex Fuel USCAR injectors

Important Compatibility Notes:

• 2003-2006 engines require a mechanical throttle body conversion (originally equipped with electronic throttle control)
• 2003-2006 flex fuel engines must be converted to Delphi Multec 2 injectors

Protected Circuits: The integrated fuse block protects air pump and solenoid, canister purge and vent, transmission and park/neutral position switch, driver and passenger side injectors and coils, fuel pump, heated O2 sensors, mass airflow sensor, brake switch, ECM power, and malfunction indicator lamp circuits.

Included Connections: A/C request, air pump system, alternator, brake switch, cam and crank position sensors, canister purge and vent, data link connector, front O2 sensors, EGR valve, engine coolant temperature sensor, dual fan relay activation, fuel pump and relay, grounds, idle air control, ignition coils and switch, fuel injectors, transmission input and output speed sensors, knock sensors, malfunction indicator lamp, MAP sensor, mass airflow and intake air temperature sensors, park/neutral switch, PCM, reverse lights, starter and relay, tachometer output, throttle position sensor, transmission control, and VSS output for speedometer.

This harness provides everything needed for a clean, professional LS engine installation with reliable engine management and protection.