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2010-2015 Camaro and 2007-2013 GM CK trucks (Escalade, Denali, Tahoe, Yukon etc.) that do not have a
tachometer output wire:
•
Connect the white Tachometer Input Signal wire to any of the 4 coil trigger wires on the coil harness to either bank
of cylinders, as shown on page 14 of the instructions. If you prefer to retrieve the tachometer signal from the ECM,
connect the RPM-003 to the ECM by first populating the correct pin and then enabling the output in the ECM, as
shown on page 12 of the instructions. If you choose the latter method for obtaining the tachometer signal, refer to the
G
M LS1/LS6/LS2 V8 engines with tachometer signal from ECM/PCM
settings example on page 6 for the correct
settings (The RPM-003 tachometer pull-up resistor function will need to be enabled if you are populating a tachometer
wire in the ECM).
• (
2700 RPM) RPM switch mode example with 100 RPM hysteresis, analog input disabled, and tachometer pull-up
resistor disabled
o
Sixteen position Input Signal Pulse Per Revolution switch set to Low Range and 0.5 pulses per revolution
o
RPM #1 programming switch for thousands of RPM (X000) on position 2
o
RPM #1 programming switch for hundreds of RPM (0X00) on position 7
○
Both RPM #2 programming switches on position 0
○
Combination of DIP switches 1-3 set hysteresis of 100 RPM
• DIP switch #1 flipped down (OFF)
• DIP switch #2 flipped up (ON)
• DIP switch #3 flipped down (OFF)
○ DIP switch #4 (Analog input activation) flipped down (OFF)
○ DIP switch #5 (Tachometer pull-up resistor activation) flipped down (OFF)
•
Make sure the pull-up is OFF or you will set a diagnostic code and potentially cause an engine misfire to occur.
• (
2700-5500 RPM) Window switch mode example with 100 RPM hysteresis, analog input disabled, and tachometer pull-
up resistor disabled:
o
Sixteen position Input Signal Pulse Per Revolution switch set to Low Range and 0.5 pulses per revolution
o
RPM #1 programming switch for thousands of RPM (X000) on position 2
o
RPM #1 programming switch for hundreds of RPM (0X00) on position 7
o
RPM #1 programming switch for thousands of RPM (X000) on position 5
o
RPM #1 programming switch for hundreds of RPM (0X00) on position 5
○
Combination of DIP switches 1-3 set hysteresis of 100 RPM
• DIP switch #1 flipped down (OFF)
• DIP switch #2 flipped up (ON)
• DIP switch #3 flipped down (OFF)
○
DIP switch #4 (Analog input activation) flipped down (OFF)
○
DIP switch #5 (Tachometer pull-up resistor activation) flipped down (OFF)
•
Make sure the pull-up is OFF or you will set a diagnostic code and potentially cause an engine misfire to occur.
NOTE - when connecting to the coil wire it is critical that the RPM-003 be powered up whenever
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-003 and keep the RPM-003 powered when the ignition is on. If
not you will likely cause a check engine light.
