Copyright
2005 Alfano, S.A. Tous droits réservés.
20
II. Finding the RPM-signal on the majority of motor ignitions and connecting the RPM-cable.
A) Classical high-tension coil:
Connecting the « yellow » cable to the negative terminal of the coil.
B) High-tension coil (static double-contact) with 2 or more cables:
One single wire is capable of providing you with the RPM-signal on the majority of ignitions. It must be
located in order to electrically connect the « yellow » wire.
Trick: to avoid damaging the insulation of the wires connected to the coil
to locate the RPM-signal, use a needle (of the designer type) and prick it
into one of the wires. Make sure that the needle skewers the wire well in
the center in order to obtain the electrical contact. Strip the « yellow »
wire of the AStrO LVF and twist it around the needle.
WATCH OUT for
short circuits.
Launch the engine at a slow pace and observe the red LED in the
transducer box. The LED must light up after contact with the wire carrying
the RPM-signal. If this is not the case, repeat the operation on the other
wires until the LED lights up.
C) High-tension coil placed on the spark plug with 2 or more cables:
These wires originate from a terminal box.
NOTICE:
the connection must be made from the side of the terminal box and not from the side of the
coil. The procedure to locate the wire carrying the RPM-signal takes place in the same manner as for the
high-tension coil (static double-contact), explained above.
« Yellow » cable
