Wiring diagram for MSD that use green wire and violet wire to pulse
Coil
+
-
ALPHAX
2STEP BOX
12V wire
Coil wire
RPM wire
Switch
2Step signal wire
Ground wire
Battery 12V
Ignition key
Battery 12V
Ground
Leave as is
Violet wire of
MSD
MSD
Cut switched 12V wire of the MSD, this is the thin red wire. The
MSD side of the wire connects to the “coil” wire (orange) of the
2step box. The other side of the wire, the harness side, connects
to the “12V” wire (red) of the 2step box.
