Auto Meter Spek Pro - User Manual

Programming Instructions for : Pressure 2 1/16”
Spek Pro Fuel Rail Pressure Gauge
Refer to the “Flow Chart Programming Instructions” while reviewing this guide.
Gauge is field programmable by the operator while installed in the vehicle. This programming is
accessed by pressing the control buttons located on the face or the meter dial, ONE AT A TIME. The
“Down” and “Up” buttons move the pointer to a desired setting or controls the faceplate illumination.
NORMAL/DIAL BRIGHTNESS
PEAK PLAYBACK
HIGH RED-LINE SETTING
LOW THRESHOLD SETTING
COLOR SCHEME
DIAL BRIGHTNESS
OPTION:RESTORE FACTORY DEFAULT
OPTION:DEMO MODE
OPTION:ADJUST POINTER BRIGHTNESS
MAIN MENU SUBMENU
PRESS “MODE” BUTTON TO PROGRAM LEVEL. THEN PRESS BOTH CENTER AND
LEFT OR CENTER AND RIGHT BUTTONS FOR FIVE SECONDS TO ENTER SUBMENU
DOWN MODE UP
+
–
OPTION: CALIBRATE GAUGE TO ENVIROMENT

Summary

Programming Instructions

Main Menu Programming

Details on setting dial brightness, peak playback, red-line, low threshold, color scheme, and dial brightness.

Submenu Programming Options

Covers calibration, factory reset, demo mode, and pointer brightness adjustments within the submenu.

General Programming Information

Explains soft reset, faceplate flashing, error signals, and timeout behavior for programming.

Wiring Installation Instructions

Package Contents and Features

Lists included components and highlights key gauge features like intelligent electronics and programmable colors.

Installation Procedures

Step-by-step guide for connecting the gauge, sensor, and power, including safety warnings.

Troubleshooting and Wiring Diagrams

Addresses common issues like sensor connection problems and provides wiring diagrams for installation.

Safety and Precautions

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Auto Meter Spek Pro Fuel Rail Pressure Gauge is a 2 1/16” intelligent electrical gauge designed for monitoring fuel rail pressure in vehicles. It is field programmable by the operator and features a stepper motor that drives the gauge pointer over a 280-degree sweep, offering a wide-angle dial with a 15% larger viewing area for superior visibility.

Function Description:

The primary function of this gauge is to display fuel rail pressure. It is equipped with programming capabilities that allow the user to customize various settings, including:

• Normal/Dial Brightness: Adjusts the brightness of the dial lighting for day or evening driving conditions.
• Peak Playback: Displays the highest pressure value recorded since the last reset. This value is held in memory until erased.
• High Red-Line Setting: Sets a high warning threshold. If the sensor value exceeds this threshold during normal operation, a red "HI" indicator illuminates.
• Low Threshold Setting: Sets a low warning threshold. If the sensor value drops below this threshold during normal operation, a yellow "LOW" indicator illuminates.
• Color Scheme: Allows the operator to select the color of the gauge dial illumination from seven programmable colors (OFF, VIOLET, BLUE, GREEN, YELLOW, ORANGE, RED, WHITE).
• Demo Mode: Displays the features of the meter, including pointer movement, dial color changes, and warning indicator lights (HI, LOW, PEAK).
• Pointer Brightness Mode: Adjusts the brightness of the dial pointer to blend with original manufacturer's gauges or owner preferences.
• Calibrate Gauge to Environment: Calibrates the gauge to the vehicle's environment with the engine off.
• Restore Factory Default: Resets all user-programmed settings to their factory defaults.

Important Technical Specifications:

• Gauge Type: Fuel Rail Pressure Gauge
• Size: 2 1/16”
• Power System: Designed for 12V DC electrical systems with a negative ground.
• Output Control Module: Optional, with a maximum output of 1.5 Amps at 12 Volts DC. Exceeding this limit will void the warranty.
• Factory Default Settings:
  • High Fuel Rail Pressure: 29,500 PSI
  • Low Fuel Rail Pressure: 12,000 PSI
• Wiring: 12-pin wiring harness and plug. Key pins include:
  • PIN 12: Ground/Black
  • PIN 8: +12 VDC/Red
  • PIN 6: Dimmer/White
  • PIN 5: 1.9 Amp Fet Output/Purple
  • PIN 3: Ground/Black (Sensor Ground)
  • PIN 2: Pressure Input/Green/White
• Fuse Requirement: A 3 AMP, fast-acting fuse is required for the +12V ignition circuit.
• Patents: U.S. Patent# 7,278,749 and # 7,612,660, with additional patents pending.

Usage Features:

The gauge is programmed using three control buttons located on its face: "Down," "Mode" (center), and "Up."

• Navigation: The "Down" and "Up" buttons move the pointer to a desired setting or control faceplate illumination. The "Mode" button saves settings and advances to the next programming level in the Main Menu.
• Main Menu Access: Programming starts in the Main Menu mode by pressing the "Mode" button one at a time.
• Submenu Access: Submenus are accessed from specific levels within the Main Menu by simultaneously pressing combinations of buttons for five seconds (e.g., "Mode" and "Up" or "Mode" and "Down").
• Soft Reset: To reset the program to normal operation from any mode, simultaneously press the "Up" and "Down" buttons. This cancels information programmed in that mode only.
• Error Indication: Programming errors are signaled by the faceplate lighting "PURPLE," "BLUE," "GREEN," then "ORANGE."
• Timeout: If programming is inactive for 60 seconds, the mode will time out, and the gauge will return to normal operation, except in Demo Mode.
• Sensor Connection Check: The gauge faceplate will flash alternately "RED" then "GREEN" if the sensor probe is not connected to the wiring harness.

Maintenance Features:

• Installation: Requires careful attention to wiring, including disconnecting the negative battery terminal, proper fusing, and securing connections. Installation should be performed by an experienced automotive technician.
• Troubleshooting: The manual provides guidance for common issues, such as the alternating "RED" and "GREEN" flash indicating a disconnected sensor probe or wiring harness.
• Warnings:
  • Never disassemble, modify, or tamper with the product, as this voids the limited warranty.
  • Avoid wiring near engine, exhaust system, turbine, or other high-heat/vibration areas.
  • Use solderless connectors and insulate all electrical connections with electrical tape.
  • Do not adjust gauges or programs while driving.
  • Take precautions to protect fuel rail pressure sensor wiring to prevent short circuits and engine damage.
  • Be aware that disconnecting the battery terminal may result in loss of audio, clock, and other memory data, requiring a reset after installation.
  • Exercise extreme caution regarding fuel and fuel vapor during installation due to flammability.

Auto Meter Spek Pro Specifications