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9 electronic control unit (ecu), 10 flying leads – Haltech F10X User Manual

Page 18

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F10X Manual

18

Connect the Fuse Block assembly to the Main Harness.

1.3.9 Electronic Control Unit (ECU)


The ECU 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.

1.3.10 Flying Leads


Locate and connect the following flying leads.

Black (Ground)

Locate a good chassis ground point and connect the black wire.


Red

(Battery Supply +12V) Locate a source of continuous +12 volts and connect the red
wire. Connecting direct to the positive battery terminal is suggested.


Grey

(Ignition Switched +12V) The grey wire is used to control the operation of the ECU
power relay. It needs to be connected so that it sees 12V only when the ignition switch
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 since +12V is not
available during cranking in many cases.


Green

(Aux In) The green wire is used as the Aux In channel. The Aux In channel is used by
a number of functions and is further described in 4.2.4 The In/Out Set-up Page, p39)
The following diagram is an example of how to wire the Aux In circuit:

Aux In

NOS, Anti-lag, Flat-Shift

Switch, etc

GND