Lingenfelter L460040000 Lingenfelter RPM-002 RPM Activated Switch Instructions v2.3 - Manual (Page 4)

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Installation:
• Disconnect the negative battery terminal.
• Connect black wire of RPM switch to a suitable vehicle ground.
• Connect the red wire to a switched and fused +12 volt DC source.
• Connect the white wire to the RPM signal source. This can 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 Table B on page 6 for information on some of the common vehicle ECM/PCM tachometer signal wiring
information.
• If you will be using the Normally Off (open) output, such as to control a shift light, connect the yellow wire to the
ground side of the device you plan to activate.
• If you will be using the Normally On (closed) output, connect the gray wire to the ground side of the device you plan to
activate.
• If the device you will be controlling draws more than 2 amps, make sure to control the device through a relay.
• Secure the device using the supplied hook and loop tape or using the supplied self taping screws.
• Do NOT mount the RPM-002 directly on top of the engine or near the exhaust manifolds due to heat concerns.
• Do NOT mount the RPM-002 in the line of site of high temperature objects such as exhaust manifolds, turbine
housings etc. If needed, put a heat shield in between the heat source and the module to protect the plastic case.
• Do NOT install within 6” of nitrous solenoids or other devices with strong magnetic fields.
• Do NOT install near the spark plugs or the spark plug wires (or other potential strong sources of electrical noise).
• LPE recommends the use of resistor type spark plugs and RFI (radio frequency interference) and EMI
(electromagnetic interference) suppression spark plug wires on all EFI engines and any vehicle that has electronic
control modules on board (including the RPM-002). Failure to do so may result in erratic operation of electronic
devices including the RPM-002.
• Set the desired RPM switch activation point using the two ten position rotary switches for the 1000 RPM increment
(X000) and the 100 RPM increment (0X00), as labeled on page 2. See Tables C & D on page 7 for the RPM switch
settings.
• Set the Input Signal Pulse Per Revolution switch to the correct setting for your vehicle application. See Table E on page
7 for the settings.
• Reconnect the negative battery terminal.
Example settings:
GM LS1/LS6/LS2 V8 engines (connect white Tachometer Input Signal to PCM/ECM TACH output)
•
1800 RPM switch point example
o Sixteen position Input Signal Pulse Per Revolution switch set to Low Range and 2 pulses per revolution
o RPM programming switch for thousands of RPM (X000) on position 1
o RPM programming switch for hundreds of RPM (0X00) on position 8
2007-2008 GM CK trucks (Escalade, Denali, Tahoe, Yukon etc.) that do not have a tachometer output wire (connect white
Tachometer Input Signal to any one of the 4 coil trigger wires on the coil harness to either bank of cylinders)
•
1800 RPM switch point example
o Sixteen position Input Signal Pulse Per Revolution switch set to Low Range and 0.5 pulses per revolution
o RPM programming switch for thousands of RPM (X000) on position 1
o RPM programming switch for hundreds of RPM (0X00) on position 8
o NOTE - when connecting to the coil wire it is critical that the RPM-002 be powered up when ever the ignition is
powered up. If you need to put a disable switch into the circuit make sure you disable the output from the RPM-002
and keep the RPM-002 powered when the ignition is on. If not you will likely cause a check engine light.