G4 Wiring and Installation Manual
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© 2009 Link
Spare Analog Temperature channels can be used for wiring of additional NTC temperature
senors. Refer to the wiring instructions for Engine Coolant Temperature sensors.
CAUTION!
Do not use a sensor designed to measure air pressure to measure
fuel, oil or water pressures. Consult the sensor manufacturers
specifications.
7.9
Digital Input Wiring
Digital inputs may be connected to switches, controllers or sensors to control various
functions including launch control (clutch switch), anti-lag, high/low boost, water spray, dual
fuel/ignition maps, nitrous oxide, air conditioning request and variable valve timing.
Switches and Controllers
The diagrams below show the two methods of wiring Digital Inputs to a switch. When wiring
other devices such as controllers it will be necessary to determine if these devices are active
low or active high. If a switch or controller drives low then the Digital Inputs 'Pull-up
Resister' will need to be enabled in PCLink Tuning Software.
Wiring of a Drive Low Switch to a Digital Input
Wiring of a Drive High Switch to a Digital Input
Vehicle Speed Input
Speed signals should only be connected to Digital Inputs 1 to 6.
Vehicle Speed may be calculated using the output from a digital speedometer drive or in
some cases from the speedometer assembly itself. This may be connected directly to a
Digital Input. Some sensors will require that the Digital Inputs 'Pull-up Resister' is enabled