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4. Connecting the Tachometer (RPM)
As well as the speed sensor cable, the RED 9-pin connector incorporates the yellow
tachometer-input wire.
If the vehicle’s ignition system uses an ignition coil, the yellow tachometer wire should be
connected to the Negative (-ve) side of the ignition coil.
If the engine has an engine management system (or ECU), with a dedicated Tachometer
output, the yellow tachometer input should be connected to this output from the ECU.
5. Test Mode
The Configuration menu (See above) accessed by holding down buttons A&B together has a
TEST MODE for verifying the presence of a signal input for Speed, RPM and Lap timer
receiver. To test the speed sensor is reading the magnets, enter Test Mode and rotate the
part on which the magnets are mounted. A ‘++’ sign should appear under the heading ‘SP’
each time a magnet passes in front of the sensor head. To test the lap trigger receiver, any
infra-red TV remote Control can be used – by pressing a button on the handset, a ‘++’ sign
should appear under the ‘LT’ (and ‘SW’) heading.
General Safety Instructions
• When connecting wires to your vehicle’s wiring loom, always ensure the negative pole of
the battery is disconnected prior to starting work to prevent short circuits.
• Connect cables in accordance with the electrical wiring schematic.
• When routing cables, use existing cable ducts or conduits where possible and fix in place
using suitable cable tape.
• Avoid routing wires near existing cables that carry high current, in particular the ignition
cables, fuel pump wires or heater fan cables.
• Do not route cables over mobile components.
• If wires are routed through drilled holes, protect them with rubber sleeves or similar.
• Insulate any exposed strands of cable so that no short-circuiting can occur.
• Always ensure that the vehicle cannot be accidentally started whilst working on the
vehicle.
• Double-check all connections before re-connecting the battery.
Help & Advice
Should you require help and advice when installing and configuring the DigiDash
2
please
contact ETB and we will do our best to help.
ETB Instruments Limited
Unit 15 Brookside, Sumpters Way
Temple Farm Industrial Estate
Southend-on-Sea
Essex
SS2 5RR
United Kingdom
Tel: + 44 (0) 1702 601055
Fax: + 44 (0) 1702 601056
Email: info@etbinstruments.com
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