Basic Wiring Installation - Holley Sniper EFI Stealth 4500 Installation Manual

BASIC WIRING INSTALLATION

The Sniper EFI throttle body has the following connectors and connections. Wires are labeled as well for
identification. Not all of these wires will always be used. The following is a main overview, with more detailed
installation information following.
7 Pin Connector – Main Sniper Wiring Harness: Mating Harness PN 558-490
Pin Color
E Red
G Black
C Blue
A Violet
B Dark Green
D Yellow
F Pink
10 Pin Connector – Mating Harness PN 558-491, 8 wires are populated. This connector contains:
Pin Color
A Orange
B Yellow
C Light Blue
D Light Green
E Grey
F White
G Dark Brown
H Tan
8 Pin Connector – Mating Harness PN 558-492, 8 wires are populated.
Pin Color
A Orange
B Black
C Violet
D Pink
E Dark Green
F Dark Blue
G Dark Brown
H Grey
Touch Screen LCD Display – This small 4 pin CAN connector plugs into the Handheld Touch Screen display unit. Replacement
3.5" Touch Screen Handheld part number is 553-115.
Coolant Temperature Connector - Connects to coolant temperature sensor. Replacement Coolant Temperature Sensor part
number is 543-120.
Oxygen Sensor Connector - Connects to oxygen sensor. Replacement Oxygen Sensor part number is 554-155.
Pre-configured Inputs and Output wiring for Nitrous Wizard Calibrations
7 Pin Connector
Pin Color
E Red
G Black
C Blue
A Violet
B Dark Green
D Yellow
F Pink
10 Pin Connector – 8 wires are populated. This connector contains:
Pin Color
A Orange
B Yellow
C Light Blue
D Light Green
E Grey
F White
G Dark Brown
H Tan
Labeled Name
Battery Positive (+)
Battery Negative (-)
Fuel Pump Output (+)
Crank Signal Positive (+)
Crank Signal Negative (-)
Coil (-) Input
Switched Ignition (+12v)
Labeled Name
Input #1 (-)
Input #2 (-)
Output #1 (-)
Output #2 (-)
Output #6 (-)
Points Output
Tach Output
Digital Gauge Output
Labeled Name
Sensor Reference (+5V)
Sensor Ground (-)
Input #3 (5V)
Input #4 (5V)
Input #5 (5V)
Output #3 (-)
Output #4 (-)
Output #5 (-)
Labeled Name
Battery Positive (+)
Battery Negative (-)
Fuel Pump Output (+)
Crank Signal Positive (+)
Crank Signal Negative (-)
Coil (-) Input
Switched Ignition (+12v)
Labeled Name
Input #1 (-)
Input #2 (-)
Output #1 (-)
Output #2 (-)
Output #6 (-)
Points Output
Tach Output
Digital Gauge Output
Function
Connects directly to battery positive terminal
Connects directly to battery negative terminal
+12v Fuel Pump Supply from Relay
Engine Speed Signal Input (see Ignition Wring Section)
Engine Speed Signal Ground (see Ignition Wiring section)
Engine Speed Input (see Ignition Wiring section)
NOTE: must remain powered during cranking
Function
Optional - Connect to a ground triggered A/C relay
Optional - Connect to a programmable ground input
Optional – Connect to Fan #1 relay ground trigger
Optional – Connect to Fan #2 relay ground trigger
Optional – Connect to ground side trigger of A/C shutdown relay
Used to trigger a CD ignition box or the included Coil Driver Module
Used to drive an aftermarket tachometer
Used to drive Holley EFI analog gauges via 554-130 Gauge Module
Function
Optional - +5V Supply for 0-5V Sensor
Optional - Ground for 0-5V Sensor
Optional - Programmable 0-5V sensor input
Optional - Programmable 0-5V sensor input
Optional - Programmable 0-5V sensor input
Optional - Programmable ground output
Optional - Programmable ground output
Optional - Programmable ground output
Function
Connects directly to battery positive terminal
Connects directly to battery negative terminal
+12v Fuel Pump Supply from Relay
Engine Speed Signal Input (see Ignition Wring Section)
Engine Speed Signal Ground (see Ignition Wiring section)
Engine Speed Input (see Ignition Wiring section)
NOTE: must remain powered during cranking
Function
Nitrous Master Enable – Switched ground trigger (Required)
Nitrous Input #1 – Switched ground trigger (Required)
Optional – Connect to Fan #1 relay ground trigger
Optional – Connect to Fan #2 relay ground trigger
Nitrous Relay Trigger - Ground side trigger for the Nitrous relay
Used to trigger a CD ignition box or the included Coil Driver Module
Used to drive an aftermarket tachometer
Used to drive Holley EFI analog gauges via 554-130 Gauge Module
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