Painless TBI Harness This harness is designed for 1986-1993 4.3L, 5.0L, 5.7L, and 7.4L throttle body injection engines. These harnesses will not work with a '94 or '95 ECM and will not operate a 4L60E transmission. These engines were factory equipped in GM full-size trucks, vans, and SUV's, S-10/S-15 trucks & SUV's, Oldsmobile Bravadas, Chevy Astro vans, and Camaro/Firebird platforms. Harnesses do not include all the original connections for the original emissions but are available separately. This harness also requires the following matching parts: ECM #1227747, #16121154, or #88999146, Calpack # 16060836, and a prom to match your engine. (4.3L) # 16082087, (5.0L) #16139492, (5.7L) #16139566, (7.4L) #16128359. This Prom does not control any transmission or torque converter functions
Note: This harness is stand alone and is not intended to replace the OEM engine wiring. Stand alone harnesses are intended to run the designated engine & transmission only, generally when swapped into another vehicle.
Harness Length: 4ft. Between Engine and ECM Fuse Type: Blade Firewall Passthrough: Grommet Color Code Based: 1990 GM Truck Circuit Designations: Printed Wire Tags on all Connectors and Open Ended Wires
Connections Included: All connections for fuel injection operation: ECM, MAP, O2, TPS, ESC, IAT, CTS, Knock, Injectors, Distributor, OBD1 w/ SES light, VSS and TCC solenoid.
Includes Connections for the Following Components: - AC Power - 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 Settings - Injectors - Knock Sensor - Malfunction Indicator Lamp - MAP Sensor - O2 Sensor - Oil Pressure - Park /Neutral Indicator Switch - Starter - Throttle Position Sensor - Torque Converter Clutch - VSS
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