Digital Gear Indicator - DGI
Tips:
1. hold in each gear at 4000 rpm + then ground the wire.
2. I found out that i just needed to adjust voltage at that gear and bam it works
3. As for program just in first gear take it up a bit and ground that wire out then do the same for all
six.
4. Make sure your ground goes to the battery.That is most important.
5. After this all you have to do is tap into the connector on the left side of the bike in the fairing.
You will have to have your bike running and check which pin has the voltage go up and down as
you rev the bike up and down. I ran mine through a toggle switch. Works great for me.
6. I also took the analog cable ran it to the back wheel down the right side of the bike. (My sides
are as if I was sitting on the bike )
7. Use the break rotor to mount the magnet. I drilled and tapped a hole for a new screw about 1/4
" long. You will see it. Works great there.
8. After that fallow how to program. Should work out fine.
At the ECU under the tank towards the rear.
Power = Red/White – Red on DGI
Neutral = Light Blue
Speedo = White/Yellow – Yellow on DGI
Crank (Tacho) = Grey – Green on DGI
Earth = Black – Black on DGI
Chapter 1 Hardware Installation
1-1 General
The DGI is an electronic device, capable of computing the right gear from info coming from the engine's RPM and
speed. The DGI is supplied with a wheel sensor and a magnet. This setup is chosen to ensure the DGI can be used
on bikes with a cable driven speedometer. The DGI can only be used with this sensor. The DGI is waterproof and
can be used throughout the year, independent of weather circumstances. We advise to avoid bright sunlight onto
the DGI; read-out could be affected by bright sunlight.
1-2 Installation Sensor.
Preferably, the wheel sensor should be mounted as depicted in figure 1. It's also possible to let the magnet pass
along the sensor along its axis. Doing so, the sensitivity will be slightly less, but this shouldn't be a problem.
Distance between the magnet and sensor is not that critical. Distance should be between 3 and 5 mm. The magnet
can be glued with loctite or super glue to one of the bolts of the brake rotor / disk.
Figure 1.
1-3 Installation Display unit.
We advise you install the DGI in a shady place, the read-out can get less in bright sunlight. To instal the display unit
you can use glue, kit or a peace of velcro. A good place to assemble the Indicator should be close to the bikes REV
- Counter. Most of the times this is the place to look for the right wire codes.
From the Display unit, multiple wires should be connected.
RED : Connection power supply (+12 Volt).
BLACK : Connection ground (0 Volt).
YELLOW : Programming wire.
GREEN : Connection for the pulse entrance of the revolution counter (tacho meter).
Chapter 2 Programming
Programming:
Programming the DGI is fairly simple. We advice to clear the DGI prior to use, by shortening the yellow teach wire
to ground, and afterwards turn on the switch (“ON”). A “C” (=clear) will appear on the display (figure 2).
Figure 2
Once this appears, you can let go of the wire. An “n” (=neutral) should appear now (figure 3).
Figure 3
In case the speed sensor is mounted on the front wheel, the DGI needs to be programmed while driving. The best
way to do so is temporary mounting the yellow program wire closely to ground, for instance with tape. In this way
one can shortly short-circuit this wire to ground while riding.
NEVER PROGRAM ON A PUBLIC ROAD !
In case a paddock stand is available and the sensor is mounted on the rear wheel, programming the DGI becomes
more convenient.
Ignite the engine and switch to first gear. Right after the engine has been ignited the dot in the upper left corner of
the display will blink, indicating the detected RPM pulses of the engine. With this optical feedback one can check
whether the DGI is mounted correctly. If it’s not blanking, please check your wiring coming from the RPM gauge.
Once the wheels are turning the DGI automatically switches from RPM detection to “wheel revolution” detection.
Now the dot has to blink every wheel revolution. If not, check whether the sensor sees the magnet. This blinking
automatically stops after about 100 revolutions of the wheel.
Now, in first gear shortly make a short circuit to ground using the yellow wire. A “1” should appear (figure 4).
Figure 4
Always connect the black wire to the motorcycle wiring harness ground, never to the frame
WARNING: when cutting or soldering is required make sure your battery is disconnected from the bikes wiring
loom.
REMEMBER ALL CONNECTIONS MUST BE SOLDERED AND ISOLATED BEFORE TESTING / TEACHING.
The RED and BLACK wire can be directly connected onto the bike's power supply, preferably the power supply of
the tacho. The already present fuse for the dashboard electronics is sufficient to secure the DGI. The green wire
must be connected at the pulse entrance of the tacho meter.
The wire color codes used on the Gear Indicator can be different on your bikes wiringloom. Never connect a red
wire to a red wire unless your shore that its the right color code.
The RPM of the engine is of no importance while programming the DGI.
Switch to second gear until a “n” appears. Wait for 15 seconds and short circuit once again so a “2” will appear on
the display. (figure 5)
Figure 5
Repeat this procedure until all gears have passed.
If the DGI needs to be reprogrammed, shut off the mains voltage (key switch to “OFF”) and power it up again. After
programming, the yellow wire needs to be insulated by e.g. a piece of isolation tape.
Chapter 3 Troubleshooting
Question: How do I clear the memory of the Gear indicator.
Answer: Shortening the yellow teach wire to ground, and afterwards turn on the switch (“ON”). A “C” (=clear) will
appear on the display. Now the Indicators memory is empty and ready to program.
Question: I cant find the right pulse wire what can I do to find it?
Answer 1: Use a Voltmeter and start the bikes engine. Find on the back of the REV counter a wire what provides a
DC voltage of half the battery’s voltage about 6 to 7 Volts.
Answer 2: Use a Voltmeter with a Frequency-counter. Hold the Black wire of the Voltmeter to the ground of the
Bikes wiring loom. Search with the Red wire from the Voltmeter in to the back of the REV counter wire loom. If
your bikes engine runs 3000RPM this should produce about 50Hz. When you find this wire its wise to measure if
the voltage on the wire is about 6 to 7 volts. If so you have found the right one and can be connected to the gear
indicators GREEN wire.
Answer 3: Some bikes have a CRANK pick up sensor that is connected to the ECU Unit. The ECU unit is the bikes
“computer” that sent Signals from and to the engine. Try to local the Crank pick up sensor and do as described in
answer 2.
Chapter 4 Specifications
Power :
12 Volts DC ( 6 Volt….. 18 Volts DC )
Power consumption :
60 mA
Dimensions :
Measures: H:34mm W:26mm T:17mm
Display Size:
H: 19 x W: 13 mm ( 0.56")
The Gear Indicator can handle speeds up to 350KM or 218MPH
The REV / TACH /RPM input is limited to 19.500RPM