5
2.0 CONNECTION OF THE INJECTORS CUT-OFF WIRING.
Verify the polarity of the injectors acting as follows:
1
Disconnect all connectors of the original injectors,
2
Prepare a multimeter to measure the direct voltage with full range equal to 20V and connect the
negative lead to the ground,
3
Place the positive lead on one of the contacts of the connector injector,
4
Insert the panel and check on the multimeter the measured voltage value. If the reading is about
12V, that is the positive cable.
WARNING
FEEDING OF THE INJECTORS IS TIMED; THEREFORE, AFTER SOME SECONDS FROM
SWITCHING ON OF THE PANEL, IT IS DISABLED.
IT IS SUGGESTED TO VERIFY THE POLARITY OF ALL INJECTORS, SINCE SOME CARS HAVE
AN INVERTED INJECTOR WITH REFERENCE TO THE OTHERS.
After having verifi ed the polarity of the injectors, it is possible to connect the injector emulation har-
ness.
Cut the petrol injector negative wire. The wires of a single color have to be connected to the injectors;
while the corresponding ones with a black stripe have to be connected to the gasoline injection control
unit.
Respect the matching between the sheath of the injector emulator wiring and the gas injector.
On the injector control, where the gas injector “A” has been connected pneumatically, it is necessary to
connect the wires of the sheath “A” of the injector emulator wiring (BLUE and BLUE/BLACK wires as
shown on the following drawing) . The same is valid for the other injectors.
In case of connection on a 3-cylinder car, the YELLOW AND YELLOW/BLACK wires have to be left
disconnected.
