Nitrous Express EFI NITROUS PLATE SYSTEM FOR GT500 - Manual (Page 5)

5
ELECTRICAL HOOK-UP:
1. Mount the toggle (Arming) switch in a location that is within easy reach of and in plain sight of the
driver.
2. (See wiring Schematic).
WIRING SCHEMATIC:
3. You must determine which wire on your vehicle’s TPS is the output signal to the vehicles
computer. Refer to your vehicle’s service manual to determine which is the output wire. Connect
all the wires as shown in the diagram. When the switch is wired you will need to turn the key to
the on position, it is not necessary to start the vehicle. Now if the switch has never been
programmed the GREEN LED will blink fast. If it has been programmed it will be ON. Either
way the switch needs to put in learn mode.
4. Once all wiring is completed reconnect the negative battery cable.
5. This switch works with rising or falling TPS signal as long as it has at least a 1v deviation between
idle & wide open throttle. When in learn mode, the unit first does a 5 second idle signal analysis.
If too much signal noise is found, it flashes an error (this is to catch a bad TPS or when connected
to wrong wire).
6. Once the switch is wired according to the schematic, you will need to put it in learn mode. Learn
mode is achieved by pushing and holding the button for 3 seconds, at which point the GREEN
LED on the switch will blink slow. This tells you it is checking the TPS idle voltage. This takes
approx. 4 seconds. DO NOT change the throttle position during this time. Once the GREEN LED
turns off you can proceed.
7. Now take the vehicle to full throttle and back to idle two times. If the GREEN LED is ON solid,
then your TPS is set. If the GREEN LED is flashing, the TPS Switch detected a variation between
the 1st and 2nd full throttle position and as a a precaution, did not learn that setting. You will need
to turn off the switch and start the learn procedure again. If the GREEN LED is still OFF, the TPS
signal range may be too small or you have the switch connected to the wrong wire.
NOTE: Once the switch has learned your full throttle position, the GREEN LED will be ON
whenever the switch has power and the RED LED will be on when the switch sees full throttle.