Lingenfelter L460240000 Lingenfelter NCC-002 Nitrous Control Center v1.5 - Manual (Page 24)

Lingenfelter NCC-002 Nitrous Control Center Installation and Operating Instructions 23
3.1.5 NCC-002 Controlling Nitrous Solenoids Via Relays
Use this configuration to control the nitrous solenoids using relays. If you are using nitrous solenoids that pull
high current, it is best to use a relay between the solenoid and controller to protect the controller from the current
of the nitrous solenoids.
NOTE: For better PWM performance, LPE recommends installing automotive relays that do not contain
resistors or diodes when using relays to control the solenoids.
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Connect the solid red wire labeled "12 VOLT PWR" to the "+12 Volt" terminal on the NCC-002 and to a fused
and switched 12 volt DC source.
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Connect the solid black wires labeled "GROUND1" and "GROUND2 to the "Ground1" and "Ground2"
terminals on the NCC-002 and to the battery ground stud.
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Connect the yellow wire labeled "ARMING INPUT" to the "Arming Input" terminal on the NCC-002, through a
WOT switch (alternatively, the TPS can be connected to the TPS Input), and to one of the wiring terminals on
the Nitrous Arming Switch. The Nitrous Arming Switch output should then be connected to the input of the
nitrous solenoid(s). If the combined current load of the nitrous and/or fuel solenoids exceeds the capacity of
the NCC-002, LPE recommends controlling the solenoids via relays. Depending on the current rating and
quantity of the solenoids you are using, it may be necessary to use separate relays for each of the nitrous
stages. If using relays to control the solenoids, see example wiring instructions in
section 3.1.3.
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Connect the striped dark brown wire labeled "N2O SLND 1" from pin 87 of an automotive relay to Nitrous
Solenoid 1. A wire should then be run from pin 85 of the relay to the terminal labeled "N2O Solenoid1" on the
NCC-002. Next, a wire should connect pin 86 to a fused 12 volt source, such as the battery. Finally, use a
wire to connect pin 30 on the relay to a reliable ground source.
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Connect the striped green wire labeled "N2O SLND 2" from pin 87 of an automotive relay to Nitrous Solenoid
2. A wire should then be run from pin 85 of the relay to the terminal labeled "N2O Solenoid2" on the NCC-
002. Next, a wire should connect pin 86 to a fused 12 volt source, such as the battery. Finally, use a wire to
connect pin 30 on the relay to a reliable ground source.
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Connect the striped tan wire labeled "FUEL SLND 1" to the "Fuel Solenoid1" terminal on the NCC-002 and to
Fuel Solenoid 1.
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Connect the striped orange wire labeled "FUEL SLND 2" to the "Fuel Solenoid2" terminal on the NCC-002 and
to Fuel Solenoid 2.
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If the user desires to activate the nitrous using engine speed, to data log the RPM, or to control a shift light,
connect the striped white wire labeled "TACH INPUT" to the "Tach Input" terminal on the NCC-002 and to a
suitable RPM Signal Source. The RPM signal source could be the tachometer output lead of the vehicle, the
switched side of the ignition coil (negative side), or the 5 volt RPM reference signal. See
Appendix C: Tables
and Diagrams for the location of the tachometer output wiring on some common GM vehicles.
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If the addition of a shift indicator light is desired, connect the solid green wire labeled "SHIFT LIGHT" to the
"Shift Light, +12V" terminal on the NCC-002 and to the shift indicator light.