Haltech IG5 - Manual (Page 19)

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1.3.8. Electronic Control Unit (ECU)
The Haltech IG5 is not designed to be waterproof. It is desirable that the ECU be given as
much protection from the environment as possible. It is recommended that the ECU be
mounted inside the passenger compartment, either on the firewall, under the dashboard or
under the passenger seat.
The ECU has four mounting holes that allow it to be mounted to most flat surfaces. In
extreme cases of vibration, the ECU should be mounted on rubber anti-vibration pads. When
mounting the ECU remember that the communications connector on the loom should remain
accessible for ease of programming.
1.3.9. Flying Leads
Locate and connect the following flying leads.
Black - (Ground) Locate a good chassis ground point and connect the black wire. The best
spot is direct to the battery negative terminal.
Red - (Supply 12V) Locate a source of continuous 12 volts and connect the red wire.
Connecting direct to the positive battery terminal is suggested.
Grey - (Switched 12V) The grey wire is used to control the operation of the Haltech IG5
power relay. It needs to be connected so that it sees 12V only when the ignition is on
and during cranking. This wire does not draw a large amount of current (< 0.5A). Do
not connect to the accessory outputs of the ignition switch.
1.3.10. Install and connect any Optional Outputs
If you are planning to use any of the Programmable Optional Outputs, install and connect
them now. Depending on what options you are using, the wiring will be different. For details
on wiring your particular options, refer to Chapter 13, Auxiliary Outputs.
1.3.11 Connect the Trigger Sensor
Refer to Appendix C Trigger Inputs for detailed information on trigger connections. If the
engine has a magnetic reluctor type signal which requires a Reluctor Adaptor you should
install the Reluctor Adaptor now. For details on how to connect the Reluctor Adaptor to the
main loom and to the trigger refer to Appendix E Wiring Diagrams.
Hall Effect and Optical triggers have three connections - ground, power and signal. The
trigger connector on the Main Harness has four pins shown in the diagram below. The
Secondary (Home) Trigger is used for Direct Fire Applications. (See Appendix C.3).