33
Route the Black/ Yellow
#970
wire to the + side of the Coil or to the output
side of the Ballast resistor. The
Ballast Resistor Connection Diagram
on
the next page has been created to aid in this connection.
The other end of this #970 wire will route to the “I” terminal on the starter
solenoid. Connection will be covered later in the manual on page 54.
“Tachometer”
Locate the 18 gauge Black/White wire printed
[ENGINE SECTION] <<COIL(-)
#923 TACHOMETER SIGNAL >>[INSTRUMENT PANEL]
This wire will send
tachometer signal from the coil to the gauge cluster. This wire will only be connected if
you are using a tachometer (factory or aftermarket). If you do not have a tachometer,
this wire may be removed from the harness. Depending on your ignition system (factory
or aftermarket) or use of fuel injection, the connection of this
#923
wire can vary:
Standard factory type of installs with a HEI distributor or external coil ignition
systems, will require this
#923
wire to be connected to the
negative “-” side of the
coil. Refer to the diagrams on the next page for
proper connection.
Terminals and a factory style connector have
been supplied to allow connecting to the - side of
a HEI Coil, seen in the photo at right, rollover
crimpers will be needed to properly install this
terminal. Insulated terminals in the parts kit have
been supplied to make other connections.
If you are running fuel injection and your ECM has a tach output wire, and the
tach output wire of the fuel injection harness will not reach the tachometer, this
#923
wire will connect to the tach output wire from the ECM.
If an aftermarket ignition box is being used, such as an MSD, Accel, etc., this
#923
wire will connect to the tach output found on the ignition box. Refer to the
MSD Ignition Connection
on the next page and to the ignition manufacturer’s
installation procedure.
Route this Black/White
#923
tach signal wire to its proper connection
point and cut to length, install the appropriate terminal for your connection,
and connect.
Use one of the following four diagrams to properly connect the coil power
(#
920
), tachometer (#
923
), and ballast bypass (#
970
). Not shown in the
diagrams are the wire(s) connecting the coil and the distributor, these are
not included.
