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Wire Colors # of Positions Labeled Connect to:In ConnectorTan/Blk,Blk/Red,Wht,Pur/Wht 4 IGN Distributor (Figure 7.1)Pur 1 OXY Oxygen Sensor (Figure 6.8)Blu, Pnk/Blk 4 conn./2 pos.each INJ Drivers Side Fuel Injectors (Figure 7.2) 1Grn, Pnk/Blk 4 conn./2 pos.each INJ Passenger's Side Fuel Injectors (Figure 7.1) 1Orn, Tan ------ OIL Oil Pressure Switch (Figure 7.2)Dk.Blu (late) or Wht (early) 1 KNC Knock Sensor (Figure 6.9) 2Tan, Blk 2 MAT Manifold Air Temp Sensor (Figure 7.1)Blk, Dk.Blu, Gry 3 TPS Throttle Position Sensor (Figure 7.3)Lt.Blu/Wht, Lt.Blu/Blk 4 IAC Idle Air Control Motor (Figure 7.3)Lt.Grn/Wht, Lt.Grn/BlkYlw, Blk 2 CTS Coolant Temp Sensor (Figure 7.3)Pur, Tan (if applicable) 2 CSW Cold Start Switch (Figure 7.3) 1,3Pnk/Blk, Gry 2 EGR Exh.Gas Recirculation Valve Solenoid(Figure 7.1)Gry,Grn,Blk 3 MAP Manifold Absolute Pressure SensorRed ----- ------ Starter Solenoid (Lrg. Term.)Pur ----- ------ Starter Solenoid (Sm.Term.) 3Pur, Tan (If applicable) 2 CIJ Cold Start Injector (Figure 7.2) 1,3,4Dk.Grn, Red, Dk.Blu, 5 MAF Mass Airflow Sensor (Figure 7.4)Blk/Wht, BlkDk.Grn ------ ------- A/C Power (To Compressor) 5Gry ------ VATS To Steering Column VATS Module (late TPI)Pur ------ VATS To Steering Column VATS Module (early TPI)Notes:1. On tuned port injection engines, the injectors, cold start switch, and cold start injector all use a connector that simplypushes on. Do not remove the silver attaching clip or the connector may come loose.2. If you have headers, you may have to relocate the knock sensor for proper clearance.3. These wires are on EARLY version tuned port systems ONLY.4. Do NOT confuse this with the cold start switch.5. The "A/C POWER" wire on both early and late version tuned port systems should be spliced into the A/C compressorpower wire near the compressor. If you do not have A/C then tape and store this wire. This wire senses power to thecompressor and automatically increases the idle speed of the engine when the A/C is turned on.Table 7.1 GM Tuned Port Injection Engine Group Connections18
Figure 7.1 Tuned Port Injection System, Right SideFigure 7.2 Tuned Port Injection System, Left Side19
Page 1 and 2: Wire Harness Installation Instructi
Page 3 and 4: TABLE OF CONTENTSList of Figures.
Page 6 and 7: 3.0 TOOLS NEEDEDIn addition to your
Page 8 and 9: 4.2 You should get to know the part
Page 10 and 11: Figure 4.2 External Coil Distributo
Page 12: • When connecting the plugs to th
Page 15 and 16: 6.1.1 Find a suitable location to m
Page 17 and 18: 6.2 SENSOR AND RELAY INSTALLATIONA.
Page 19 and 20: Figure 6.9 Knock SensorFigure 6.10
Page 21: 7.4 SENSOR AND RELAY INSTALLATIONTh
Page 25 and 26: Figure 7.5 Engine Compartment Overv
Page 27 and 28: 9.0 PRE-ADJUSTMENTS BEFORE STARTING
Page 29 and 30: CODE # CIRCUIT AFFECTED CODE # CIRC
Page 31 and 32: STEP 3 - ATTACHING THE B+ POWER WIR
Page 33 and 34: Diagram 2 Early TPI Emissions29
Page 35 and 36: STEP 5 - CONNECTING THE CHARCOAL CA
Page 37 and 38: Diagram 4 Brake Switch Relay Connec

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