Mallory Ignition Mallory OFF-ROAD ELECTRONIC IGNITION CONTROL 6867m_6866m - Manual

OFF-ROAD
ELECTRONIC IGNITION CONTROL
FORM 1678M 05/07
INSTALLATION INSTRUCTIONS
1 MALLORY IGNITION www.malloryracing.com
GENERAL INFORMATION
This ignition includes a single stage RPM
limiter. You can set various settings using
the switches that are located in the end
bracket. See Figure 1 of this instruction
form for more information about the rev
limiting and ignition retard features.
Battery
The Ignition Control operates on any
negative ground, 12 volt electrical system
with a distributor. It will also work with
16 volt batteries and can withstand a
momentary spike of 24 volts in case of jump
starts. This system delivers full voltage with
a supply of 10-18 volts, and operates with a
supply voltage as low as 8 volts. If your
application does not use an altern a t o r, allow
at least 15 amp/hours for every half hour of
operation. If you crank the engine with the
same battery or other accessories, such a s
an electric fuel or water pump, increase the
amp/hour rating.
Coils
For optimum performance with your Ignition
Control, we recommend a Mallory PROMAS-
TER® Coil P/N 29440 or 30440 or 30441
Mallory PROMASTER® E. For
continuous high rpm use, coil part numbers
29625, 30625 or 30626 can also be used.
You may also use most stock coils d e s i g n e d
for use with OEM electronic ignitions.
NOTE: Do not use Mallory’s PROMASTER®
Coil P/N 28880.
Tachometers
The yellow wire on the Ignition Control
provides a trigger signal for tachometers,
shift lights, or other add-on RPM activated
devices. This wire produces a 12 volts
square wave signal with a 20% duty cycle.
Some vehicles with factory tachometers
may require a tach adapter to work with the
Ignition Control. If your GM vehicle uses an
inline filter, it may cause the tach to drop to
zero on acceleration. If this occurs, bypass
the filter. For more information on
tachometers, see page 5.
Spark Plugs
Using the correct spark plug and heat range
is important for optimum performance.
Because there are so many
variables to consider, we suggest starting
with your engine manufacturer’s spark plug
recommendation. From there, you can
experiment with small changes in plug gap
and heat range to obtain the best performance
from your engine. We also recommend
non-resistor spark plugs.
Foreign Vehicles
Because of modern fuel injection systems,
some foreign vehicles may require a
tachometer/fuel injection adapter to work
with the Ignition Control.
NOTE: Do not install the Ignition Control in
any vehicle that is originally equipped with a
CD ignition contro l .