Lingenfelter L460260704 Lingenfelter CAN to Analog Gauge & Relay Output Module CAN2 v1.0 - Manual (Page 25)

Hardware Install 25
© 2014 Lingenfelter Performance Engineering
2.8 Wiring The Outputs
We have supplied a mating connector with a short pigtail harness for the CAN2 output wires. We have
also supplied loose pins for the mating connector if you would prefer to attach your wires directly to the
connector. The cavity plugs for the mating connector are also provided so that you can remove any wires
you will not be using and replace that wire with a cavity plug to maintain a sealed connector.
How you connect the CAN2-002 module output wires for each channel will depend on the type of gauge
or other device you are connecting to. Some types of outputs will require all three output wires per output
channel while others may only require one output wire.
Determine what type of gauge or device you are connecting to. Possible gauge and sensor types
include:
Resistance to ground type sender
o Here the sender is a single wire type sender and the sensor grounds to what ever it is connected to.
o Most of the VDO pressure and temperature gauges operate with this type of sender.
o Most Autometer and other company temperature gauges operate with this type of sender.
Analog voltage output type sender
o These are usually a three wire output sensor with a reference voltage (often 5 Volts), ground and
signal.
o The Autometer pressure gauges are usually this type of sensor.
Frequency type.
o Most production and aftermarket electric tachometer and speedometers are frequency input type
gauges.
On a resistance to ground type sender, the CAN2-002 module is simulating a resistance signal by
pulsing the ground output. When the output is on it is connected to ground and when it is off it is an
open circuit.
On analog voltage type input gauges, the CAN2-002 module is taking the internal or external reference
voltage (depending on the application) and pulsing that output. When the output is on it is at the
reference voltage and when it is off it is a connected to ground.
2.8.1 Resistance Type Output
This output configuration is used to simulate the sensor output normally found with single wire sensors.
These sensors provide a variable resistance and ground through the threads of the sensor. Temperature
and pressure sensors exist in this configuration.
For a resistance type output signal you will wire the CAN2-002 module to the gauge as follows:
Take the signal wire (green tracer) for the output you want on the CAN2 module and connect it to the
signal wire on the gauge.
Connect the ground wire on the gauge to a suitable vehicle ground.
Connect the power wire on the gauge to a vehicle switched ignition power source.
If the gauge is back-lit, connect the correct power and ground for the gauge back-lighting. This may
need to be tied to the dash or instrument cluster power so that the back-lighting is only on when the
other gauges are also back-lit.
Connect the ground wire (with the black tracer) from the CAN2 channel you are working on to a good
chassis ground.