These wiring installation instructions are specific to the wiring harness manufactured by FAST only.  If you are using a wiring harness other than the one offered by FAST please contact your dealer for instructions for that harness.

The wiring harness is labeled on each of the connectors to simplify installation.  Your application may not require the use of all the connectors in the harness.  You may also require additional accessories such as relays, sensors, and other specialized connectors to complete your installation.  Care should be taken to route all wires as far away from the distributor and spark plug wires as possible to minimize interference from ignition noise.

Points
Connect this wire to the points input wire on your aftermarket ignition system, if you are using one.  If you are using the FAST eDist, the points wire should be connected to the points input of the eDist, located at pin C2 of the eDist connector.

Fuel (-)
Connect this wire to the negative side of a relay used to power your fuel pump (relay not included).  This output switches to ground when active.  Use this wire to activate the negative side of a relay, and use the relay to provide power to the fuel pump.  Do not connect this wire directly to the fuel pump or to a 12 volt source or ECU damage will occur!  Fuel pump control is available on bank-to-bank systems only. 

Fan (-)
Connect this wire to the negative side of a relay used to power your fan (relay not included). This output switches to ground when active.  Use this wire to activate the negative side of a relay, and use the relay to provide power to the fan.   Do not connect this wire directly to the fan or to a 12 volt source or ECU damage will occur! Fan control is available on bank-to-bank systems only. 

ESC
For most Bank to Bank applications, connect this wire to a GM-type ESC (knock sensor) module, typically located on the firewall or inner fender.  The knock sensor used should be a GM-type knock sensor.  Use of the knock sensor is not recommended for applications where high-octane fuel is used.  In some special cases, this input is used for a hall-effect cam sync signal.  Knock sensor control is available on Bank to Bank systems only.

C-Com
Connect this plug to the supplied RS-232 communications cable for connection to your computer’s serial port.  If the supplied cable is not long enough for your needs, a 25-foot RS-232 cable (part # 30-8014) is available.

N2O
If the nitrous oxide control option is available, This connector is used for connecting up to 2 nitrous stages.

• The pink wire is the enable wire.  Connecting this wire to +12V enables the nitrous oxide system.  This is typically connected to a toggle switch.
• The white wire is the control output for the first stage.  This output switches to ground when active.  Use this wire to activate the negative side of a relay, and use the relay to provide power to the nitrous solenoid.  
• The blue wire is the control output for the second stage.  This output switches to ground when active.  Use this wire to activate the negative side of a relay, and use the relay to provide power to the nitrous solenoid.  

Do not connect the white or blue wires directly to a nitrous solenoid or to a 12 volt source or ECU damage will occur!

If you are using the nitrous oxide wiring harness provided by FAST, connect the harness to the N2O connector in the main wiring harness and use the following instructions:

• The pink wire is the enable wire.  Connecting this wire to +12V enables the nitrous oxide system.  This is typically connected to a toggle switch.
• The red wire provides power for the relays in the nitrous oxide harness.  Connect this wire to +12V.
• The orange wire is the control output for the first stage solenoid.  Connect this wire to the nitrous solenoid, and connect the other wire on the solenoid to ground.
• The brown wire is the control output for the second stage solenoid.  Connect this wire to the nitrous solenoid, and connect the other wire on the solenoid to ground.

12V+ Switched
Connect to a +12V source that is active when the key is in the START and RUN position.  This is the wire that actually turns the ECU on, so it is critical that it receives 12 volts when the key is in the ON position and in the START position.

Ground
This ground connection is used for the relay in the wiring harness and should be connected to a clean chassis ground.  Be sure to remove all paint and corrosion from the point to which this ground is attached.

BAT+ and BAT-
The battery wires should only be connected to the battery terminals, not to an intermediate power source or ground on the chassis or engine.  This will ensure maximum noise rejection from ground loops and conducted noise.  Connect these only after all other connections are made.

Wide Band O2
If the Wide Band Oxygen Sensor option is being used, connect this plug to the supplied oxygen sensor using the provided extension harness.  The oxygen sensor should be located in an exhaust pipe where the sensor will be able to get a good "average" reading from at least one entire bank of cylinders.  If you have a turbocharged motor, put the sensor in the downpipe rather than in a collector.

H2O
Connect this plug to a GM-type coolant temperature sensor, such as FAST part # 30-7003.

Air
Connect this plug to a GM-type air temperature sensor, such as FAST part # 30-7004.  For speed/density applications, this sensor should be mounted in a position where it samples the charge air in the manifold.  For Alpha-N applications, mount this sensor to sample ambient air temperature, as in the hood scoop or in the air cleaner.

MAP
Connect this plug to a GM-type Manifold Absolute Pressure sensor, such as FAST part # 30-7007 for normally aspirated applications.  For blown or turbocharged applications, use a 2 bar MAP sensor (part # 30-7008) for up to 15 PSI of boost and a 3 bar MAP sensor (part # 30-7009) for up to 30 PSI of boost. For speed/density applications, this sensor must be connected to an intake manifold vacuum port.  For Alpha-N applications, mount this sensor to sample ambient air pressure, as in the hood scoop or in the air cleaner.

TPS
Connect this plug to the throttle position sensor located on the throttle body, such as FAST part # 30-7006 (GM applications) or part # 30-7005 for Ford applications.

IAC
If the Idle Air Control option is being used, connect this plug to the Idle Air Control motor.  Use FAST part # 30-7014 for 1987-1995 GM TBI and 1985-1992 TPI applications.  Use part # 30-7015 for 1992-1997 GM LT-1 and LT-4 applications.  For Ford applications, use part # 30-7014 with Idle Air Control adapter part # 30-7022.  For blown, turbocharged, or other special applications, use Remote Idle Air Control unit, part # 30-7016.

Cam
Connect this plug to an inductive pickup-type camshaft sensor, and connect the ring terminal to a ground point such as the engine block.  A camshaft sensor input is only required for sequential systems with individual cylinder control.  It is recommended for all sequential systems, however.  If your engine does not have a camshaft sensor and one is required, contact your FAST dealer for assistance.  Unless specifically noted elsewhere, bank-to-bank configurations do not require a camshaft sensor.

Crank
Connect this plug to an inductive pickup-type crankshaft sensor (typically a inductive pickup crank trigger or distributor), and connect the ring terminal to a ground point such as the engine block.  The following chart shows the wire colors to connect for some common crank triggers.  Virtually any crank trigger system should be compatible, so long as it is properly connected. 

O.E. Ignition
This plug is used to connect to your vehicle’s factory ignition system.  It can easily be adapted to many different ignition types.  The four pins on this connector are labeled A, B, C, and D.  A connector is provided for you to create your own adapter for your ignition system.  The following diagrams outline adapter configurations for the following ignition systems:

Ford TFI:	GM HEI: For HEI distributors with ignition coil in cap: For HEI distributors with external ignition coil:
GM Optispark: Pin C on the Optispark connector must have switched +12V source for the Optispark unit to operate!	Buick DIS:
GM Northstar DIS:

Injector
This plug will be connected to the supplied fuel injector harness.  If specified at the time of order, the harness can be configured for your specific firing order.  Otherwise, injector harnesses are shipped for a standard GM V8 firing order (18436572). 

If you need to reconfigure your injector harness, refer to the following chart.  The 10-pin connector on the end of the injector harness can easily be reconfigured to work with many different engine types.  Terminals A through H on the connector are designated for each of the eight injector connectors on the harness and can be reconfigured as per the following chart.  Terminals J and K should not be changed under any circumstances. 

The configurations in this chart are set up with the injector harness plug on the opposite side of the motor as the distributor to minimize interference from ignition noise.  The harness is also configured to operate the injectors in a fashion that minimizes fuel pressure loss in the rails.