User's Manual

5.0 GENERAL INSTALLATION INSTRUCTIONS

6.0 GM LS2 FUEL INJECTION HARNESS KIT

7.0 TROUBLE-SHOOTING INSTRUCTIONS AND TROUBLE CODES

Sections are further divided into Paragraphs and Steps. Throughout, the Figure numbers refer to illustrations and

the Table numbers refer to information in tables. These are located in or near the sections or paragraphs to which

they correspond. Always pay careful attention to any notes or any text labeled CAUTION.

3.0 TOOLS NEEDED

In addition to your regular tools you will need the following:

Crimping tool NOTE: USE A QUALITY TOOL TO AVOID OVER-CRIMPING.

Wire stripper

Continuity tester CAUTION: DO NOT USE A TEST LIGHT TO TEST THE COMPUTER OR SENSOR

WIRING. YOU WILL DAMAGE THE COMPUTER.

Electric drill

1 5/8" Hole saw (for the rubber grommet in the firewall)

4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES

The installation of your harness kit will consist of two parts:

~ The physical routing, positioning, and securing of the harness, wire groups, and individual wires and

connectors.

~ The proper electrical connection of the individual circuits.

We cannot tell you how to route the harness in your automobile. That depends a great deal upon the particular make

of the automobile and what extent you want to secure and conceal the harness. We do offer some general guidelines

and routing practices starting in Paragraph 5.3, general installation instructions in Section 5.0, and precise

instruction concerning the electrical connections you will have to make beginning in Section 6.0. To help you begin

thinking through the installation of your wire harness read the following sections:

NOTE: Emission devices

The 60520-21 harnesses have no emission wiring included. The emissions kits are sold

separately. If you are planning on connecting the factory emissions it is recommended to

purchase the emissions harness and install it at the same time as the main harness.

4.1 TRANSMISSION FUNCTION

4.1.1 T-56

If you are using a T56 transmission, tape off and store the orange/black and black/white

(gear indicator switch) wires in the dash group and the 13-position (transmission) round connector

in the tail section. Plug in the skip shift solenoid, reverse lockout solenoid and vehicle speed

sensor connector to the transmission as shown in Figure 6.28. We have included a wire to turn on

a skip shift light if you are planning on using one. This wire is white/black and provides a ground

to the skip shift light. You must connect power to the other side of the light.

4.1.2 4L60E

If you are using a 4L60E transmission, tape off and store the skip shift light wire, skip

shift solenoid and reverse lockout solenoid connectors. You must use the vehicle speed sensor

(VSS), correct brake switch and a gear indicator switch. These are necessary to make the

transmission work correctly. The brake switch should be closed (electrically connected) when the

brakes ARE NOT being applied and open (not electrically connected) when the brakes ARE

being applied. This is the opposite of a standard brake light switch. If you are using a pressure

brake switch, a SPDT relay must be installed to unlock the converter when the brakes are applied.