Painless Wiring 60101 TBI Wiring Harness for 1986-1993 GM

This wiring harness from Painless Performance is made for 1986-1993 4.3L, 5.0L, 5.7L, 7.4L Throttle Body Injection engines. This harness does not include all the original connections for the original emissions, they are sold seperately. Connections that are included are listed below. This harness kit includeds a step-by-step manual, and all the wires are color-coated with labels for an easy installation!  Click here  to see if this harness is right for your application.

Installation Instructions (PDF) 

This harness includes connections for the following components:

• A/C Power
• Alternator
• Brake Switch
• Data Link Connector 
• Distributor
• ECM
• EGR Valve
• Electronic Spark Control Module
• Engine Coolant Temperature
• Fuel Pump
• Fuel Pump Relay
• Fused System Power
• Grounds 
• Idle Air Control
• Ignition Switch Signal (Fused)
• Ignition Timing Setting
• Injectors
• Knock Sensor
• Malfunction Indicator Lamp
• MAP Sensor
• O2 Sensor
• Oil Pressure
• Park/Neutral Indicator Switch
• Starter
• Throttle Position Sensor
• Torque Converter Clutch
• VSS 

Note:  These harnesses will not work with a '94 or '95 ECM and will not operate a 4L60E transmission!