User's Manual

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.

~ 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 LS2 fuel system does not have a built-in

regulator on the fuel rail. AC Delco part #GF822 is a fuel filter with a built in regulator set at the

stock fuel pressure for these LS2 engines.

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.

5.2 ROUGH INSTALLATION

CAUTION: DISCONNECT THE POWER FROM YOUR VEHICLE BY REMOVING THE

NEGATIVE BATTERY CABLE FROM THE BATTERY.

Note: Make no wire connections or permanent mounting of any kind at this time.

5.2.1 Position the computer and TAC module in their intended locations.

5.2.2 Drill a 1-5/8" hole for the firewall grommet near the computer for the engine group and tail section

to pass through.

5.2.3 Route the engine group and transmission section through the hole. Push the grommet (already

installed on the harness) into the hole until it is seated.

5.2.4 Route the dash group over to the driver's side of the car.

5.2.5 Route the fuse block and relays to the place they will be mounted.