Racepak 250-DS-123 User manual

Racepak Dash Quick Start Guide
250-DS-123 & 250-DS-686

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CONTENTS:
Package Contents.............................................................................................................................................3
Mounting ...........................................................................................................................................................3
Connections ......................................................................................................................................................5
Main Connector..........................................................................................................................................5
CAN Extension Harness.............................................................................................................................8
USB............................................................................................................................................................9
GPS Antenna .............................................................................................................................................9
Cleaning..........................................................................................................................................................10
Touchscreen Basics........................................................................................................................................10
Main Menu.......................................................................................................................................................10
Modifying Channels on a Preconfigured Layout........................................................................................14
Saving Gauge Screens................................................................................................................................14
Quick Save...............................................................................................................................................14
Rename and Save....................................................................................................................................15
Building a Custom Gauge Screen................................................................................................................15
Add Gauges .............................................................................................................................................15
Customizing the Gauge............................................................................................................................15
Backup/Restore...............................................................................................................................................16
Data Log Playback ..........................................................................................................................................17
Firmware Upgrade...........................................................................................................................................17
ATTENTION!
A DETAILED USER MANUAL MAY BE FOUND ONLINE AT www.holley.com.

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Introduction
The Racepak 12.3”and 6.86”Dashes are customizable with a variety of gauge and indicator screens that can
be programmed to display any parameter you need from a Racepak/Holley EFI system. This quick start guide
will get you up and running with your new dash. A detailed User Manual can be found on the USB flash drive
included with your product.
Package Contents
Mounting
There are two basic ways to mount the dash, “surface” and “flush” mount. Included with the contents of this kit
are separate templates with a 1:1 layout for both methods. The “Flush Mount” allows the user to recess the
product to facilitate a “flush” mounting option, which recesses the unit, please be aware that brackets to
support the back of the dash will need to be fabricated. The “Surface Mount” simply mounts the unit to a flat
face.
NOTE: The 6.86”has four 10-32 tapped mounting holes, the 12.3”dash has six ¼-28”tapped mounting holes.

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Connections
Main Connector
A 34 pin CAN/power harness is supplied with the dash and is used to for power, communications and I/O.
The following are the required connections:
Loose Black –Connect to a “clean” ground source. Don’t ground to poor sources such as sheet metal, or a
ground point that does not have solid connectivity back to the battery.
Loose White –Connect to a “clean” switched battery power source
NOTE: Loose White wire is only required when not connected to a powered VNET logger or device.
Dash will power on simultaneously with the logger or device.
Loose Red –Connect to a “clean” continuous battery power source. Continuous power is needed for a faster
GPS lock and to keep the current date and time.
“Clean” = a connection that does not share the same connections as “dirty” sources such as coils, a starter,
solenoids, fans, etc., that have a lot of electrical noise or solenoid fly-back voltage.
VNET –The supplied VNET tee cable is used to provide communication with your
data logger and sensors. When connecting any VNET display or sensor to your data logger care
must be taken to ensure you have properly installed the VNET termination caps that were
provided with your data logger. Failure to properly install the termination caps can result in
communication problems on the VNET data bus. Also, care must be taken not to route any
VNET cable in close proximity to any of the vehicle’s secondary ignition components, i.e. ignition
coil and spark plug wires.

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NOTE: IF NOT USING HOLLEY EFI SKIP TO PAGE 9
CAN –Connect the harness from the CAN connector on the vehicle’s EFI main harness to the dash using the
supplied male/female 4’ CAN/Power extension. Place the supplied terminator into the empty CAN connector.
The terminator must be used at the end of the CAN cable.
Holley EFI main harnesses use two types of CAN connectors. Earlier harnesses use a 2 pin Metripak
connector. The kit includes an adapter to go from this to the 4’ extension harness (note the white power and
black ground wires are NOT needed for the Pro Dash, but need to be connected if other CAN devices require it
for their power supply). Later harnesses plug directly into the 4’ extension harness.
Old Style CAN Adapter
The CAN harness attached to the dash includes both male and female CAN connectors. These connectors are
wired in parallel to allow daisy chaining of multiple devices on the CAN bus.
Note that the Pro Dash does not use the CAN cabling to supply power and ground for it, unlike some other
Holley EFI CAN devices, nor does the Pro Dash supply power to the CAN cabling, which is provided by the EFI
harness.
Pro Dash CAN Cable Description
Pin
Function
Description
1
+12V
Power (pass through between connectors, not used for Pro Dash)
2
CAN1H
CAN_H Holley EFI communications
3
CAN1L
CAN_L Holley EFI communications
4
GND
Ground (pass through between connectors, not used for Pro Dash
CAN Extension Harness
The dash is supplied with a 4’CAN extension harness. Holley also offers the following replacement harnesses:
558-451 –1 foot
558-452 –4 feet
558-453 –8 feet
558-454 –12 feet
Additional wires can be installed to use additional functions in the Pro Dash. Consult the connector diagram
and main user manual for more information.
Install CAN
terminator here.
Male/Female
CAN Extension
Cable

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1 2 3 4 5 6 7 8 9
GND 12V SSR1 SSR2 SSR3 SSR4 CAN1H CAN1L CAN2L
10 11 12 13 14 15 16 17
CVBS1 CVBS2 SW4 SW3 SW2 SW1 CAN2H 5V_EXC
18 19 20 21 22 23 24 25
AIN_1 AIN_3 AIN_5 AIN_7 AIN_9 AIN_11 AIN_13 IGN
26 27 28 29 30 31 32 33 34
GND AIN_2 AIN_4 AIN_6 AIN_8 AIN_10 AIN_12 SPD1 SPD2
Notes:
1. The 12V main power input (pin 2) also provides backup for the internal clock and GPS.
2. IGN (pin 25) needs to be connected to 12V to turn on the unit (low current input).
3. SSR1-SSR4 are low-side solid state relays, 1.5 Amp max.
4. 5V_EXC is used to power sensors, 450mA max.
5. CVBS inputs are reserved for future use.
The unit will draw approximately 5 mA in standby to maintain its real time clock and GPS information for quicker
acquisition.
USB
The unit has two standard USB type C locking receptacles (USB 2.0). Connect the supplied locking cable to
either of the USB ports on the back of the unit and tighten the thumbscrews.
This cable provides a type ‘A’ receptacle that can accept USB flash drives for saving data logs, uploading
gauge screen layouts, background images, or firmware updates. You may also use these to connect to a USB
mouse or keyboard if you do not want to use the integrated touchscreen for configuration.
The USB flash drive that is included with your unit contains a user manual and can be used to transfer
configurations and log files to your computer.
GPS Antenna
Install the GPS antenna where it has clear view of the sky to the horizon for best reception. The label needs to
face down, with the black plastic part of the antenna facing up. The antenna comes with a built-in magnet and
can also be permanently mounted. For racing applications, it is recommended that the antenna be
permanently mounted using the included double-sided VHB tape.

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Connect the SMA connector to the GPS antenna connector on the back of the unit. Do not overtighten the
connector, 3-5 in lbs max.
Cleaning
If screen needs cleaning, use the supplied microfiber cleaning cloth. Do not use harsh chemical cleaners on
the touchscreen display.
Touchscreen Basics
The Pro Dash has a capacitive touch screen display similar to many cell phones and does not require a stylus.
While thick gloves may not work properly, some racing gloves are available with integrated finger pads that
work with touchscreens. The touchscreen is used for configuration and EFI tuning. A stylus can be purchased
(if desired). Make sure that it is for a capacitive touchscreen, which would be used for a cell phone.
Pushbutton switches can be added to select functions (such as scrolling through screens) on the pro dash
while driving. For more information about these functions, see the detailed user manual.
Main Menu
Pressing anywhere on a gauge screen will bring up the navigational buttons. To access the Main Menu,
choose ‘Menu’ in the upper right corner of the screen.
View Live
Gauge
Screens
Utilities
Menu
Gauge
Customizing
Modify dash
System
Parameters