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MX STRADA SERIES
CHAPTER 9
MX Strada series dash can receive RPM value from the ECU. If on the contrary the vehicle does
not have an ECU RPM can be sampled using the wire labelled “RPM” (corresponding to pin 21
of MX Strada series 23 pins connector).
9.1 RPM from ECU
To get the RPM from the ECU just connect MX Strada series dash to the ECU and it will auto-
matically sample that value.
Please note:
if your vehicle ECU can be reached through an OBDII plug, a dedicated harness
for MX Strada series AMP 14 pins connector is available, as shown at the end of this user guide.
9.2 RPM via a 5-50V square wave or coil (150-400V)
If the vehicle has no ECU connect the wire labelled “RPM” (corresponding to pin 21) of the de-
vice 23 pins connector harness to the ignition system. This way MX Strada series can read the
signal from the low voltage of the coil (whose peak can be from 150 to 400 V) or from a possible
square wave (the peak can be from 5 to 50 V).
The image below shows an example of wiring of the ignition system.
The output labelled “GRAY TACH” gives a 5-50V output that can be directly sampled by MX
Strada series dash.
Once MX Strada series connected to RPM signal enable it and set its parameters in channels
page of Race Studio 3 as explained in “Channels configuration” paragraph.
9 RPM
In case the vehicle ignition system has no output MX Strada series dash should be connected
to the low voltage of the coil as shown in the following images.
Point 1:
low voltage of the coil
Point 2:
connected to the spark plug
Point 3:
connected to the +12V of the
battery
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