User's Manual

Table 4.1B 60508-9 Compatible Parts
5.0 GENERAL INSTALLATION INSTRUCTIONS
CAUTION:
~ DO NOT DISCONNECT THE BATTERY OR THE COMPUTER CONNECTORS WHILE THE
IGNITION IS ON.
~ DO NOT SHORT ANY WIRES IN THIS HARNESS TO GROUND (WITH THE EXCEPTION OF
LABELED GROUND WIRES) OR DAMAGE TO THE COMPUTER WILL RESULT.
~ GIVING OR RECEIVING A "JUMP START" MAY DAMAGE THE COMPUTER.
~ DO NOT USE A TEST LIGHT WHEN TESTING COMPUTER SENSORS OR COMPUTER
CIRCUITS. DAMAGE TO THE COMPUTER WILL RESULT!
~ WHEN ROUTING THE WIRES FOR THE VEHICLE SPEED SENSOR (IF USED) MAKE
CERTAIN THAT THEY ARE AT LEAST 12 INCHES AWAY FROM ANY IGNITION WIRING
(SPARK PLUG WIRES, ETC.).
Notes:
~ There is a normal, small current drain on these fuel injected systems.
~ Each connector in this harness is different and will not fit in the wrong place. NEVER FORCE ANY
CONNECTOR.
~ When connecting the plugs to the computer USE EXTREME CARE
to make sure none of the pins in
the computer are or become bent.
~ The fuel pump and pressure regulator you are using MUST
maintain a constant pressure of 55-60
PSI
(pounds per square inch). If using a higher pressure pump you must add an inline regulator to
bring the pressure down to the 55-60 range since the LS1 fuel system does not have a built-in
regulator on the fuel rail as in many earlier GM fuel injection systems.
5.1 GROUNDING THE VEHICLE
A perfectly and beautifully wired automobile will nevertheless have problems if everything is not properly grounded.
Don't go to the effort to installing a quality wire harness only to neglect proper grounding.
Note: The installer of this harness is responsible for all ground wires not provided with this part.
5.1.1 Connect a ground strap or cable (minimum of a 4 Ga. wire) from the negative battery terminal to
the chassis (frame).
5.1.2 Connect a ground strap (minimum of a 4 Ga. wire) from the engine to the chassis (frame). DO
NOT RELY UPON THE MOTOR MOUNTS TO MAKE THIS CONNECTION.
5.1.3 Connect a ground strap from the engine to the body.
4
LS1 Fuel Injection Harness (99 - 02) Part # 60508 & 60509
Main Computer…………………Service #9354896
Service #12200411
Fuel Pump Relay………………..Delco #15-8240
Brake Switch…………………….Delco #D850A
Gear Indicator Switch…………...Delco #D2286A
Intake Air Temperature………….GM #12160244
Delco #213-243
MAF Sensor……………………..GM #25179711
Engine Coolant Temperature……GM #5326388
Delco #213-953
Oxygen Sensor (Pass. Side)……..GM #25312196
Delco #AFS97
Oxygen Sensor (Drvr. Side)……..GM #25312197
Delco #AFS98
TPS Sensor………………………GM #17123852
Delco #213-912
MAP Sensor…………………..…GM #16212460
Delco #213-331
Idle Air Control Motor…………..GM #17113391
Knock Sensors…………………...GM #10456603
Delco# 213-362
Coils………………………….…..GM #12558948
Delco# D580
Cam Position Sensor……………..GM #12561211
Delco# 213-363
Crankshaft Position Sensor………GM #12560228
Delco# 213-354
VSS(4L60E Only)……………….Delco# 213-328