MSD 6012 Installation

MSD 6LS-2 Ignition Controller for

Carbureted and EFI LS 2/LS 7 Engines

PN 6012

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Parts Included

1 – Ignition Controller, PN 6012 1 – Pro-Data+ Software CD 1 – Harness 1 – Parts Bag 6 – Timing Modules

WARNING: During installation, disconnect the battery cables. When Disconnecting, always remove

the Negative cable ﬁrst and install it last.

Note: Solid core spark plug wires or non-resistor spark plugs cannot be used with an MSD Ignition

Control.

Optional Accessories

Hand Held Monitor, PN 7550 Factory EFI Harness, PN 88862

CARBURETOR

The PN 6012 Ignition Controller is designed for GM LS 2/LS 7 based engines that have been retro-ﬁt with an intake manifold and carburetor. The Controller is supplied with a wiring harness that connects to the factory connectors for a simple installation.

EFI

This Controller can also be used in stock, EFI applications, by using accessory Harness PN 88862. This Harness allows the PN 6012 Controller to tap into the sensor signals without interrupting the OEM ECU. The ECU and Fuel Injectors operate as normal while the PN 6012 controls the ignition and timing.

OPERATION

The MSD Controller offers several programmable features that allow rpm and timing adjustments. This can be achieved through the supplied Pro-Data+ software via a PC or with the optional Hand Held Programmer, PN 7550. Timing adjustments and selections can also be made with plug-in modules. Software installation, operation and the programmable features of the Controller are explained in detail in this document. More information can be found in the Pro-Data+ Software Help section.

MOUNTING

The Controller is designed to be mounted under the hood or on the ﬁrewall. Do not mount the unit near exhaust. Four vibration mounts are supplied to mount the unit. Find a suitable location, conﬁrm that all of the wires reach their connections. Mark the mounting hole locations using the unit. Drill the holes with a 3/16" bit.

WIRING

All of the wiring, except three wires, are routed into factory style connectors to ensure an easy installation. The wire descriptions follow in the chart on pages 2 and 3.

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2 INSTALLATION INSTRUCTIONS

LOOSE WIRES

BLACK/GRAY Pin-A/B Ground. Connect to a ground source, such as the engine or battery negative.

PINK Pin-C On/Off wire. Connect to a switched 12 volt source.

YELLOW Tach Signal. Provides a 12 volt square wave signal.

CRANKSHAFT SENSOR, 3-PIN

ORANGE/YELLOW

BROWN Pin-B Sensor Ground

ORANGE Pin-C 5 Volt Supply

CAMSHAFT SENSOR, 3-PIN

BROWN/WHITE Pin-C Cam Sensor Signal

BROWN Pin-B Sensor Ground

ORANGE Pin-A 5 Volt Supply

MAP CONNECTOR, 3-PIN (OPTIONAL)

BROWN Pin-A Sensor Ground

LT. GREEN Pin-B MAP Sensor Signal

ORANGE Pin-C 5 Volt Supply

COIL CONNECTOR, CYLINDERS 2, 4, 6, 8

BLACK Pin-A Ground

RED/GREEN Pin-B Coil-2

BROWN/GREEN

BROWN Pin-E Sensor Ground

Pin-A Crank Sensor Signal

Pin-C Coil-4

WHITE/BLUE Pin-F Coil-6

VIOLET/BLUE Pin-G Coil-8

PINK Pin-H 12 Volt Supply

Note: Pin-D is not used.

COIL CONNECTOR, CYLINDERS 1, 3, 5, 7

BLACK Pin-A Ground

RED Pin-B Coil-7

GREEN Pin-C Coil-5

BROWN Pin-E Sensor Ground

LT. BLUE Pin-F Coil-3

VIOLET Pin-G Coil-1

PINK Pin-H 12 Volt Supply

Note: Pin-D is not used.

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INSTALLATION INSTRUCTIONS 3

2-PIN CONNECTOR, ACCESSORIES

PINK Pin-B Step Retard. When 12-volts are supplied, the Step Retard is activated.

BLUE Pin-A Two-Step. When 12-volts are supplied, the RevLaunch rpm value is active.

16-PIN CONNECTOR WIRE LOCATION

GRAY Pin-A Ground

PINK Pin-B 12 Volt Supply

BROWN/WHITE Pin-C Cam Sensor Signal

RED/GREEN Pin-D Coil-2

BROWN/GREEN

WHITE/BLUE Pin-F Coil-6

VIOLET/BLUE Pin-G Coil-8

YELLOW Pin-H Tach

BROWN Pin-J Sensor Ground

LT. GREEN Pin-K MAP Sensor Signal

RED Pin-L Coil-7

GREEN Pin-M Coil-5

LT. BLUE Pin-N Coil-3

VIOLET Pin-P Coil-1

ORANGE/YELLOW

ORANGE Pin-S 5 Volt Supply

Pin-E Coil-4

Pin-R Crank Sensor Signal

Figure 1 Wiring the MSD 6LS-2 Controller.

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