Mallory Ignition Mallory OFF-ROAD ELECTRONIC IGNITION CONTROL 6867m_6866m - Manual (Page 5)

5 MALLORY IGNITION www.malloryracing.com
Inoperative Tachometers
If your tachometer fails to operate with the
installed, you may need a Mallory tach
adapter. Before purchasing a tach adapter,
try connecting your tachometer trigger wire
to the yellow wire of the Ignition Control.
This output produces a 12 volt, square
wave. If the tach still does not operate, you
will need a tach adapter. Two different tach
adapters are available:
PN 29078 - If you are using the magnetic pickup
connector (green and violet wires) to
trigger the Ignition, you will need this
adapter.
PN 29074 - If your tach was triggered from the coil
negative terminal (voltage trigger) and
you are using the green wire to trigger
the Ignition, you will need this adap t e r.
TROUBLESHOOTING
This section offers several tests and checks
you can perform to ensure proper installation
and operation of the Ignition Control. If you
experience a problem with your Ignition
Control, first check for proper installation
and poor connections. You can eliminate
many problems by checking these items. If
you have any questions concerning your
Ignition Control contact the Mallory
Technical Service Department at 216-688-
8300, option 5.
Tach/Fuel Adapters
If your tachometer does not operate corre c t l y,
you probably need a Mallory tach adapter.
Consult the Tachometer Compatibility List
at right for common tachometers and
compatible tach adapters.
No-Run on Foreign Vehicles
Some foreign vehicles with fuel injection
systems may require a tachometer/fuel
injection adapter to run with the Ignition
Control. Often, the same trigger source i s
used to operate an ignition, tachometer, and
fuel injection. This results in a voltage signal
that is too low to trigger the fuel injection. A
tach/fuel injection adapter will usually solve
this problem.
TACHOMETER COMPATIBILITY LIST
Aftermarket Green Wire Magnetic Trigger
Tachometer Trigger Connector
Autogage 29074 29078
Autometer — —
Ford Motorsport — —
Moroso — —
Stewart 29074 29078
S.W. & Bi Torx — —
Sun 29074 29078
VDO 8910 29078
AMC (Jeep) 29074 29078
Chrysler 29074 29078
Ford (Before 1976) 29074 29078
Ford (After 1976) 29074 29078
GM Bypass in-line Bypass in-line
filter filter
Imports 29074 29078