Installation Instructions

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vw_gti_mkv_installation_instructions.pdf

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Installation Instructions with additional pictures

• Disconnect the battery and remove it.
  

• Remove the battery tray.
  

• You may need to disconnect the high current wire shown below from the fuse box to be able to remove the tray.
  

• Remove the plastic cover from the underside of the driver's side dash so you can access the pedal wiring.
  

• You will need a torx bit driver to remove the screws.

• Disconnect the wiring harness for the light and the OBD port so that you can move the plastic panel out of the way. Be careful, the light will be hot!
  

• Locate the rubber grommet on the firewall near the clutch switch. Carefully poke a new hole in the grommet using a sharp object, such as a screwdriver. Be careful not to damage other wires already in the grommet.

• Bundle the WOT Box 18 AWG YELLOW, GREEN and 16 AWG RED / BLACK paired wires using electrical tape. Using a coat hanger or other sharp object, pull the bundle through the grommet in the firewall.

• Pick out a location to mount the WOT Box. We recommend inside the fuse compartment on the driver's side of the dash. The WOT Box must be installed inside the passenger compartment since it is not waterproof. Additionally, you will want to make the WOT Box accessible to the driver, due to the fact that setting the 2-step RPM will require holding down the clutch pedal while holding the button on the WOT Box.
• Route the connector end of the wiring harness to the fuse box behind the dash. Be careful to avoid sharp metal objects and pinch points. Leave enough of the harness in the passenger compartment to make the WOT Box easy to get to, but not an excessive amount.

• In the engine compartment, locate the following large wire bundle as it enters the rain cowl. It is on the driver's side of the engine compartment, towards the back on the firewall. Carefully cut back some of the wire bundle covering to expose the inner wires.
  

• Locate the WHITE / REDCLUTCH PEDAL POSITION SWITCH wire shown below. NOTE: There are THREE WHITE / RED wires in this bundle. Make sure you choose the smallest wire of the three. The correct WHITE / RED wire will show 12 volts with the clutch pedal up and 0 volts with the clutch pedal down. Verify this with a volt meter before making the connection, if you can.
  

• Carefully strip back some of the insulation on the WHT / REDCLUTCH PEDAL POSITION SWITCH wire. Be sure not to break the wire. Connect the 18 AWG GREEN wire from the WOT Box to the WHT / REDCLUTCH PEDAL POSITION SWITCH wire. Solder the connection and cover with electrical tape.
  

• Tape up the harness with electrical tape and secure the 18 AWG GREEN wire from the WOT Box.
  

• Locate the ignition coil wiring harness on the driver's side of the cylinder head, near the cam shafts as shown below. Remove some of the split loom tubing to expose the wires.

• Locate the heavy gauge RED wire. Cut the wire and strip both ends of the wire about 5/8".
  

• Split apart about 6" of the 16 AWG RED / BLACK wire from the WOT Box. Strip the ends of the wire and slide two pieces of provided heat shrink tubing over the wires. Connect the 16 AWG RED wire from the WOT Box to the side of the RED wire that is going away from the ignition coils. Connect the 16 AWG BLACK wire to the side of the RED wire that is going towards the ignition coils as shown.
  

• Solder the connection and use the provided heat shrink tubing to cover the connection.

• In the same wiring bundle, locate the VIOLET / GRAY Ignition Coil #1 Trigger Signal wire and carefully strip back some of its insulation. Be sure not to break the wire. Connect the 18 AWG YELLOW wire from the WOT Box to the VIOLET / GRAY Ignition Coil #1 Trigger Signal wire. Solder the connection and cover with electrical tape.
  

• Tape up the harness with electrical tape.
  

• Recover the harness with the split loom tubing. Secure all of the WOT Box wires using the provided zip ties. Be sure to route the wires away from heat sources and sharp objects that may damage them. This completes the under-hood portion of the installation.
  

• Back in the passenger compartment, remove the cover above the gas pedal to gain better access to the Accelerator Pedal Position sensor wiring. Disconnect the connector by unlocking the red lock and squeezing.

• Locate the WHITE / BLUE Accelerator Pedal Position (APP) wire at pin #4 of the connector and carefully strip back some of its insulation. Be sure to not break the wire. Connect the 18 AWG BLUE wire from the WOT Box to the WHITE / BLUE Accelerator Pedal Position (APP) wire. Solder the connection and cover with electrical tape. Reconnect the APP connector and replace the cover.
  

• Next, cut the 18 AWG BLACK wire from the WOT Box to about 1' in length. Strip the wire and solidly crimp on the provided ground lug connection.
  

• Solder the ground wire to the ground lug.
  

• Remove the top attaching screw from the fuse block. Slide the ground terminal under the fuse block and re-attach as shown. Or use another convenient ground point. Make sure the metal where you attach the ground lug is clean, unpainted and free of rust. Use sand paper to prepare the surface, if needed.
  

• Connect the WOT Box to the harness and tuck the WOT Box into the fuse panel. Re-install the battery and all the plastic trim that was removed during the installation. The installation is complete. Proceed to the testing section below.
  

Troubleshooting - Testing the WOT Box

1. Key on the car but do not start the engine. Quickly press the gas pedal to the floor. You should see the LED on the WOT Box start to rapidly blink. If it does not, check your APP sensor signal connection (WOT Box BLUE wire).
2. Next, with the gas pedal still depressed, press the clutch pedal to the floor. You should see the LED on the WOT Box briefly go out, and then come back on solid for one second and then finally resume blinking rapidly. If you do not see this, check your Clutch Pedal Position Switch signal connection (WOT Box GREEN wire).
3. Next, start the engine. Quickly press the gas pedal to the floor and immediately step on the clutch. You should hear the engine start to rev up, stumble for a short period while the ignition is cut, then return back on and continue revving. Remove your foot from the gas before you hit the rev limiter. The 2-step will not engage if the gas is depressed before the clutch. This is normal. If the engine does not stumble or pause when the LED turns out, then check the RED/BLACK paired wire. Verify that the RED and BLACK 16 AWG wires are wired facing the proper way. If they are reversed, the ignition cut will not work.
4. Lastly, test the 2-Step. Press the clutch pedal down and then quickly press the gas pedal all the way down. The gas pedal must be floored for the 2-step to engage. The engine should rev up to the desired RPM and hold. If it does not, be sure to remove your foot from the gas before you hit the rev limiter. If the 2-step does not work, check the Ignition Coil #1 Trigger Signal wire (WOT Box YELLOW wire).