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Installation Instructions
Speedometers, Stepper motor technology, Front face
programmable
Part numbers XES3/5-1Bxx-xx (x indicates any
character in the part number)
Application notes
The operating voltage is normally 12 volts. The
range of operation is 10 to 16 volts, negative
earth only. The speedometer is intended for panel
mounting, it is shower proof from the front only
and must be protected from environmental damage at
the rear. The speedometer must be calibrated to
suit the pulses per mile or km of individual
vehicles using the programming harness and push
button assembly (supplied in your kit as an
accessory) or via the reset button on the front of
the instrument. This must be done when the
speedometer is installed in the vehicle and
powered. The calibration range is from 2500 to
128,000 pulses per mile.
Wire Colour
Pin No
Connect to
Green
1
Switched Ignition positive 12 volt supply, 3A Fuse
Brown /
Slate
2
Connected to harness reset OR not used
Red
3
Pull Up/Down (if required)
Red /
White
4
Instrument Illumination
12v supply (side light feed)
Black
5
Chassis or battery negative
White /
Black
6
Speed signal input (hall ECU)
Red /
Blue
7
Speed signal input
For low voltage output senders
Light Green
/
8
Not Used
Purple
Setting the pulses per mile.
The calibration mode is selected by
switching on the ignition while simultaneously
holding the programming button and waiting for 3
seconds. After 3 seconds release the reset button,
in calibration mode the odometer display will
flash.
By momentarily pressing and releasing the reset
button each number (extreme left side first) can
be incremented to your desired value.
When the desired value is selected release the
button and wait 3 seconds.
The next number to the right will flash, increment
this number in the same way and continue until all
the numbers are programmed to your pulses per
mile/km.
At the end of the sequence wait 3 seconds and the
speedometer will return to normal operation. If
you switch off at any time before the end of the
sequence no changes will be programmed.
For most of the following calculations you will
need to know the number of times that your tyre
revolves per mile or kilometre. Stand the vehicle
on a flat surface and make a mark on the tyre at
the closest point to the ground, mark the floor at
the same point. Move the vehicle forwards for one
revolution of the tyre and measure the distance
covered.
63360 divided by the distance covered in
millimetres = tyre revs per km
Measure the rolling radius (RR) of wheel and
tyre, from centre of hub to ground in inches/mm
How to calculate the pulses per mile / km
(calibration number)
Prop shaft mounted magnetic sensor
(magnets or Bolt heads moving past the sensor)
Calibration number = (tyre revs per mile or km) x
(differential ratio) x (no of magnets or bolts
Sender driven from transmission cable
drive
Calibration number = (cable turns per mile
or km) x (number of pulses per sender revolution)
Calculate RR as above.
Push vehicle forwards on flat ground for 6 tyre
revolutions and count number of cable turns.
1680 x (cable turns) divided by RR for inches
For mm divide by 25.4
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