Haltech HT045666 - Manual (Page 10)

Fuse Box
The Haltech fuse box is connected to the harness.
Contained within the Haltech Fuse box is 6 fuses and 6 relays, each fuse protects the
corresponding relay output ( ie fuse #1 protects relay ouput #1, fuse #2 protects relay
output #2 etc).
The Haltech fuse box can handle a maximum continuous current draw of 70AMP,
exceeding this value may cause damage to the fuse box therefore please ensure all
auxiliary devices, fans and fuel pumps connected do not exceed the supplied fuse
current limits.
The functions of each of the relays are outlined below:
Figure 3 – Haltech fuse box relay allocation table
Figure 4 – Haltech fuse box layout
Crank Angle Sensor (CRANK)
The Crank signal connects directly to the engine Crank Angle Sensor located in the
right rear of the engine block behind the starter motor.
The Haltech ECU uses this signal to accurately measure crankshaft position and
engine speed.
Ignition 1-8 (IGN1, IGN2, IGN3, IGN4, IGN5, IGN6, IGN7, IGN8)
The ignition outputs connect directly to the factory ignition harness.
Ensure the correct ignition output is connected to the corresponding coil bank
on the engine.
Please refer to the label on the harness for correct cylinder bank allocation.
Injection 1-8 (INJ1, INJ2, INJ3, INJ4, INJ5, INJ6, INJ7, INJ8)
The injector outputs connect directly to the injectors.
Please ensure the correct injector output is connected to the corresponding injector in
the engine. Please refer to the label on the harness for correct injector allocation.
Manifold Absolute Pressure Sensor (MAP)
The Manifold Absolute Pressure Sensor is located on the intake manifold.
Connect the MAP labeled connector directly to the sensor.
The MAP sensor measures changes in the intake manifold pressure which result from
engine load and RPM changes and converts these into a voltage output so the ECU
knows the manifold pressure.
Vehicle Speed Sensor Input (VSS-Input) (optional)
The VSS-Input does not support the OEM reluctor style sensor.
Provisions have been made to allow the user to connect a supported Hall effect style
vehicle speed sensor.
The sensor provides information on vehicle speed to the Haltech ECU which can be
used to display vehicle speed, detect gears or controlling of switches etc.
Connect a supported Hall style sensor as follows.
Pin# 1: Blk/Wht – Sensor Ground
Pin# 2: Gry/Red - +12V Sensor Power
Pin# 3: Grey (Shielded) – Sensor Signal
Pin# 4: Unpopulated
Fuse # Relay # Function Fuse Required
F1 R1 +12V Output to ECU 10A
F2 R2 +12V Output to Injectors 20A
F3 R3 +12V Output to Ignition 15A
F4 R4 +12V Output to Fuel Pump 20A
F5 R5 +12V Output to Accessories 20A
F6 R6 Unpopulated -