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1 - Wiring Diagrams

2-Hardware Installation

Mounting the Computer

Picking an ideal position for the computer screen

  • A bar or bracket across the window or side panel of the passenger side of the tractor when seated in the cab is ideal.
  • Use provided ram mounts to connect to the bar or bracket. Drill holes and use bolts if necessary.
  • Make sure there is easy access to the touch screen at all times and that the operator can see the computer at all times.
  • Make sure it is secure as it will take a lot of vibration and bumps during operation.
  • See Picture for a generic placement of the computer screen.

Power Connections


  • Most tractors have convenience ports; this is the easiest place to connect the control computer, DAC 7000, and GPS power.
  • Convenience ports: Pictures 12.1-12.3
  • John Deere has convenience ports on the right hand side of the tractor on the dash by the back right post. Picture 12.1.
  • CNH has convenience ports on either the front right corner post or behind the seat on the right side (both work well, just depends on how you want the cords to run). Pictures 12.2a and 12.2b.
  • CAT Challenger - Tracked
    Challenger A/B has convenience ports behind the seat on the right side. Picture 12.3.
    - Challenger C/D/E may need an adapter cable from the power strip to a convenience port.
  • If your tractor does not have a convenience port, you should find both constant power and switched and bring that into the cab, and wire in an in-line fuse (10 amp).



Routing overview:  Run the GPS cables and the electric over hydraulic control cables out of the cab.

  • John Deere – out the back window through the rubber seals
  • CNH - out the bottom of the cab; under the right side through the rubber or foam; or out the back window.
  • CAT – out the back window through the rubber seals
  • Make sure all cords are tied up and excess is not in a position to get caught on anything or kicked by the operator’s feet.

Control computer:

  • COM 1 (serial) is for GPS ALWAYS (green)
  • COM 2 or COM3 (serial) are for the electronic over hydraulic controller (DAC 7000). Typically COM 2 on Sailor and COM 3 on AFL2-12A (brown, see starting page 18).
  • See Section 1 - Wiring Diagrams for complete cable hookups.


Mounting the GPS Antenna

  • The GPS antenna needs to be mounted directly above the scraper blade or plow tip.
  • It should move 1:1 with the blade or tip.
  • It should be mounted high enough to acquire signal above the tractor (3-6 foot mast is recommended). Scraper: Picture 17.1. Tile Plow: Picture 17.2.
  • Make sure the GPS cord running back to the tractor from the antenna is attached securely and not hanging loose.
  • Check that there is enough slack in the line for the movement of the implement and turning of the tractor.

Slope Definitions

Hydraulic Control John Deere

  • John Deere-00-R Series:
    For the electronic over hydraulic control cable (DAC-7000-JD), the gray connector off the DAC 7000 will run outside through the back window. Remove the back panel that the ‘slow moving vehicle’ sign is attached to. The connection will be made underneath that panel on the left side when looking toward the front of the tractor. Make sure the tractor isn't running when plugging the cord in or it will throw a code in the tractor.  When it is plugged in and the key is on, the tractor should show ‘EC’ (or ‘Auto’ on R Series) on the hydraulic screen showing that the cord has been plugged in. See Pictures 13.1, and 13.2 for examples.

Hydraulic Control CASE and New Holland

  • CNH – for the electronic over hydraulic control cord (DAC-7000-CIH/NH), the gray connector will come off the DAC 7000 and run outside either down underneath the cab on the right side or out the back window.
  • On the MX Series, the connection is under the ‘slow moving vehicle’ sign.
  • On 2010 and older QuadTracs, the connection is hanging below the cab on the right side (when looking from the back of the cab). See Picture 14.1 (just to the right of the arrow).
  • On the 2011 QuadTrac and newer, the connector is inside the cab under the plastic on the right hand side. See Pictures 14.2a and 14.2b

A “1-3 switch” (must be installed by a CNH dealer, contact your local dealer) is also needed to give SD Drain control of the machine (see Pictures 14.3a and 14.3b).

The tractor will now need to be programed to “Scraper 1” on the corner post.

  • For 2011 and older: with the key Off, hold the Program (PROG) button on the corner post, turn the key one notch to the right, then use the arrows to go down to AUX.  Hit PROG button, then arrow down to AUX Setup, hit the PROG button, arrow down to Scraper 1 (unless you have a slope sensor, then use Scraper 2).  Hit PROG button, then arrow down to AUX Exit, then hit PROG button. Arrow down to EXIT, then hit PROG button. Turn key to OFF.
  • For 2012 and newer: Turn the key switch to the On position and within 10 seconds press and hold the Enter key on the keypad to enter the Config Menu screen. Use the Up or Down arrow keys to highlight “TCU” and press the Enter key.  Use the Up or Down Arrow key until “EHR Menu” is shown and then press the Enter key.  Use the Up or Down arrow key until “EHR SETUP” is shown and then press the Enter Key.  SCRPR NONE will be shown on the screen.  Use the Up or Down arrow key until “SCRPR-1 LASER” (unless you have a slope sensor, then use “SCRPR-2 LASER”) and then press the Enter key.  Turn the key to the Off.


Hydraulic Control CAT "A"and B Series

  • Challenger A/B will need to be run outside through the back window and down to the hydraulic block. It is best to use Hydraulic #1, but 1-4 can be used. Numbers 5 and above do not work. Disconnect the connections and reconnect the new ones (note or label which ones they are so they don’t get mixed up). Pictures 15.1-15.2.

Hydraulic Control CAT C Series and newer

  • Challenger C/D: DAC 7000 controls plug in behind the fuse panel inside the cab, by the floor. Hydraulics #1 and #2 will be able to be controlled.  Hydraulic #1 if only one is used.  The CAN connector will connect to the CAN bus extension cable on the right side of the fuse panel.  The connection will be a black 4-pin connector.  After the tractor is started, the enablement of the isobus control may be needed (Picture 15.3 and 15.4).
  • To enable controls, select the wrench button on the main tractor screen (Picture 15.5). Select the second page button (bottom right) (Picture 15.6).  Make sure Isobus Class 3 is enabled (Picture 15.7). The end result should be Picture 15.8.

External Valve

  • External Valve controls (Picture 16.1) will need to be run from the DAC 7000 to the outside of the cab and run to where the external valve is mounted. This cable needs to be tied up well so that the cable doesn’t hang.
  • Multi-Function Joystick - Run the joystick (Picture 16.2) from the DAC 7000 making sure the cables don’t get caught or pinched under the seat.

3 - DAC Setup in SD Drain

DAC 7000 Setup in SD Drain

Settings -> DAC Button -> DAC Control Tab

Select the correct “Port” the DAC is connected to.

Press “Start” to confirm the DAC 7000 is connected.

Once properly configured you will see “DAC DETECTED” under the “Status” .

NOTE: If there are problems connecting to the DAC, check the Port #. If it is an External DAC, check wiring and confirm the correct lights are ON in the yellow DAC Box.


DAC 7000 Configuration

Settings -> DAC Button -> DAC Config

Pressing “DAC Config” will open the “DAC 7000 cfg” window.

Press “Setup DAC7000” and select the correct configuration, this will open the “Tune” window.

DAC 7000 Options in SD Drain

Settings -> DAC Button -> DAC Settings Tab

On this page you can set the most common options for the DAC.

DAC Speed:  Minimum Speed for SD to send data to the DAC. Speeds SLOWER than this value will result in no up / down movement of the plow from the DAC.   Setting this to 0 may cause movement of the boot while sitting still and is NOT recommended for safety reasons.

Pitch Adjustment (SD Drain Tile only):  Amount of grade the pitch of the plow is adjusted when installing tile. This value adjusts the values being read by SD coming from the DAC2X-2. “ - ” will move the tip of the plow down and “ + ” will move the tip up. Typical Range  0.1 to –0.1

NOTE: Pitch adjustment only applies to plows that have a slope sensor.

Deadband Amount:  Amount off the design line the plow is allowed to be before the program sends a movement command.  This can be helpful during poor GPS conditions to help keep the plow from moving do to GPS jumps.  Not recommended to change unless directed to by a technician.

Dual Link Pitch Only (SD Drain Tile only):  This setting allows users with dual link plows set up to control both pitch and elevation to control pitch only without switching the hoses on the tractor.  Movement commands are sent to the pitch cylinders and the main cylinders need to be set to float.  This is useful if plowing in very rough field conditions and the hydraulics are not able to keep up with the up/down movements.

Allow Joystick Override:  Enable/Disable commands sent from the DAC to turn off and on the Auto button.

Version:  Installed version of DAC firmware

Send Command:  Enter commands to be sent to the DAC.

Message Box:  When checked shows messages being sent by the DAC.

Slope Sensor:  Enable/Disable the slope sensor if attached.

Tare Pitch and Zero Roll buttons:  Level the plow and press these buttons to zero out (tare) the slope sensor.

Pitch/Roll Messages:  Enable/Disable sending pitch and roll messages to SD Drain.  These messages are used for GPS compensation do to the tilting of the plow.

Fore Slope Control:  Enable/Disable pitch control.

Cross slope Control:  Enable/Disable cross slope control.  Should be off unless instructed by technician to turn on.

CAN Joystick:  Enable/Disable CAN based multi-function joystick.

4 -DAC 7000 Configuration

DAC 7000 Configuration App

To enter the DAC 7000 configuration app double click on the DAC 7000 icon on the desktop

or go to Settings -> DAC -> DAC Config in SD Drain

If you start the DAC Config app from the desktop the com port will need to be set.  This only has to be done once unless you change something in the system.

Set the COM port you have the DAC plugged in to.  Typically an externally DAC will be on COM 3 and an internal DAC will be on COM 9.

Click save once you have set.

DAC 7000 Basic Tuning

Set your hydraulic flow at 60% to 65% (6 to 6.5 on John Deere tractors) as a starting point.

DAC 7000 Machine Label

DAC configurations can be saved to the computer and reloaded when you switch equipment.  When you save a new configuration it will appear at the top of the configuration list on the DAC Setup screen.  We recommend naming the configuration in a matter that will make sense to you in the future such as "7 ft tile plow" or "13 yard Ashland Scraper".

To save a configuration click on the "Config Admiin" button.

  • Select "Retrieve Current DAC7000 Config" on the top right of the page
  • Enter the name you wish to assign in the "Config Name" field
  • Select "Config for Main List"
  • Click "Save Config to File"

Once you click on the "Save Config" button another screen will open asking you to name the file.  Assign it a name and click OK.

Unlock Key

If you purchased additional features for the DAC you will need to enter a new Unlock Key in to the DAC for the feature to work.  A firmware update may also be needed.

From the main DAC Config screen click on "Unlock Key"

Enter the code provided in to the boxes on the top of the page then click on "Submit Key"

You can also view current unlocks by clicking on the "Refresh Features List" button

DAC 7000 Setup Screen

To get to the setup screen click on "Setup DAC7000"

Configuration column

Configuration List:

List of configurations that are available to load on to the DAC.  Any user configurations that are saved in DAC Config will appear at the top of the list.

Preloaded configurations include base setting for most hydraulic configurations.  Also in this list are setting to turn on slope sensors, joystick and other features of the DAC.  Some features require unlocks.

Loading a base hydraulic setting from this list will turn off any features that you have turned on.  Reload any additional features that you need.


Indicates which channel you are currently changing the settings for.  Typically channel 1 is for elevation control, 2 is for slope control, and 3 is for steering.


Movement boxes are where your settings appear after pressing the button above the slider.

"Set Tune" button applies the settings in the "Movement" boxes to the DAC.  This button does not permanently save the settings.  You must press the "Save changes to DAC7000" or your setting will be lost after a power cycle.


"View DAC7000 Config" button retrieves the current DAC configuration and displays it on the screen.

"Save changes to DAC7000" saves the current DAC configuration so it isn't lost when power is removed.

Movement cloumn

This is where the sliders and buttons are located for basic DAC tuning.

Channel column


Indicates output type assigned to the selected channel.

  • Analog - 0-5 volt output, typically John Deere and Case/New Holland.
  • PWM - Pulse Width Modulation.  Most solenoid type proportional valves.  Typically 0- system voltage.  Max voltage can be set to anything less then system voltage.
  • PWMH - Same as PWM but starts at max voltage and goes to 0
  • Bang Bang - On-Off valve
  • Duty Cycle - Ratiometric output based on system voltage.  0-system voltage with 1/2 of system voltage being center
  • ISO 11783 - CAN AUX valve output based on the ISO 11783/J1939 spec.
  • ISO Steer - Loosely based on ISO 11783/J1939 steering spec.
  • J1939 data - Custom CAN output for specific application.

Do not make changes to this setting unless told to do so by a technician, load a configuration from the "Configuration List" instead.  Changing the channel type by itself does not make all of the changes needed for most applications.


The amount of time in milliseconds the DAC will send a command.

Channel - Tune

The + column are the up movement setting and the - column is down


The number of divisions between the first step and the last step.  Increasing the number of steps makes the divisions smaller and slows down the movement of the controlled device.

1st Step:

The command, expressed as a percentage of the maximum output, that is sent when the DAC receives a minimum movement command.

Last Step:

The command, expressed as a percentage of the maximum output, that is sent when the DAC receives a maximum movement command.

Set Tune button:

Commits any changes made to the Tune boxes to the DAC.  You must click on the "Save changes to DAC7000" or your changes will be lost when the DAC is shut off.

Swap button:

This will swap the + and - settings in the Tune boxes.  For Analog and Duty Cycle this will reverse the outputs.

Channel BLimits:

Bang Bang setting.  Can only be changed from the terminal.

Max On:  The maximum amount of time in milliseconds the valve will be held open.

Min Off:  The minimum amount of time in milliseconds the valve will be closed.

Min On: The minimum amount of time in milliseconds the valve will be held open.

Freq Hz:

The current PWM frequency the DAC is set to output.  The frequency can be changed by entering your desired frequncy in the box and pressing "Set".

Command Sent:

The last command sent to the DAC from the DAC Config app.

5 - DAC 2X-2 Setup

DAC 2X-2 Mounting the Sensor

The sensor must be mounted with the writing facing upwards and the forward arrow pointing forward.

Bolts are preferred over Tek screws.

The DAC 2X-2 should to be mounted as close to parallel to the bottom of the shank as possible on a tile plow or the ground on a scraper or blade.

The DAC2X-2 should be mounted near the pivot point of the shank on a tile plow.  For readings only the sensor can be installed anywhere that tilts with the cutting edge as long as the arrow point forward and it is reasonably close to level.  For control it should be mounted close to the point where the control mechanism connects to the blade.  No matter where the sensor is mounted it needs to move in a 1:1 ratio to the cutting tip.

There are 3 cables needed to connect the slope sensor to the DAC.

6PFD-3PMD-CAB.  This cable connects to the DAC in the cab and extends to the hitch of the tractor.  Make sure to connect both the blue CAN connector and orange power connector.

6PMD-3PFD-PLOW.  This cable connects to the "CAB" cable at the hitch and to the adaptor cable for the sensor.  Be sure to route this cable where it will not get pinched and leave enough slack for the full range of travel of the equipment.

And one of the following:

CBL 300307.  Slope sensor adaptor for DAC2X-2.  Connects the "PLOW" cable to the sensor.

5P-SLOPE-6P.  Slope sensor adaptor for the original DAC2X.  Connects the "PLOW" cable to the sensor.

DAC 2X-2 Channel 2 Configuration

When using a slope sensor for control you must also tune Channel 2 on the DAC or performance will be erratic.  Choose the channel 2 radio button and repeat the "Minimum DAC Movement" steps.


There are 2 ways you can check the data being received by the DAC from attached sensors.  In DACCFG open the terminal screen and any data being sent to the computer will be shown.

From within SD Drain go to Settings -> DAC ->DAC Data.

Tare or "Zero" the Slope Sensor

In order for the slope sensor to work properly it must be calibrated for level to compensate for mounting surfaces not being 100% true.  On tile plows the point that is being read is the bottom of the boot and on blades it is the cutting edge.

On tile plows:

  • Fore slope or pitch control.

It is recommended to use a magnetic level that will attach to the bottom of the boot.  It is typically simpler to do this on a clean level pad.

Clean the bottom of the boot making sure there is no dirt that will cause the level to be off.

Attach the level to the bottom of the boot then move and use the hydraulics to move the boot until the level reads 0 then press the tare button for fore slope.  (TIP: Most tiles plows work better slightly nosed down.  This can be accomplished with a setting in the program or by setting the plow slightly nosed down before pressing the tare button)


  • Equipment capable of cross slope or roll control:

It is recommended to use a magnetic level that will attach to the bottom of the blade or controlled surface.  It is typically simpler to do this on a clean level pad.

Clean the bottom of the blade making sure there is no dirt that will cause the level to be off.

Attach the level to the bottom of the blade then move and use the hydraulics to tilt the blade until the level reads 0 then press the tare button for cross slope.

  • Tilt Compensation -- No control

This setting is used for tilt compensation of the GPS signal.  In most configurations there is at least one axis for which there is no hydraulic control.  For these applications the implement needs to be moved or lifted to obtain a 0 reading on the level.  Typically parking on a known level pad will work.

For cross slope the level reading can be taking either on a cross bar that is perpendicular to the implement or on the side of the GPS mast.  Since this reading is being used to compensate for the lean of the GPS globe the mast is the best place to take your readings from.  However it is simpler to see the level on a cross bar and in most instances this will work.  When you get the level reading 0 press the tare button for cross slope.

6 - Multi-Function Joystick

DAC Joystick Configuration

To enable reading from the Joystick open the DACCFG app and go to the Setup page.

From the list of available configurations on the top left choose "Enable CAN Joystick" or "Enable Analog Joystick" depending on which one you have.  You will have to scroll part way through the list to find these selections.

Click "Upload Config to DAC"

Click "SAve Changes to DAC"

Changing Setting on the Muti-Function Joystick

From within DACCFG click on the "Multi-Function Joystick" button

To retrieve the current configuration click on "Poll from DAC"

To save changes click on "Save to DAC"

To change joystick button behavior choose the function you want from the drop down list for that button.  Be sure to save after you have made any changes.

7 - DAC Pinout

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