Mallory Ignition ACCEL DFI 6A Electronic Ignition Control Module for Distributor Equipped Engines 75606 - Manual

1
GENERAL INFORMATION
BATTERY
This Ignition Control Module 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 alternator, allow at least 15 amp/hour for every half
hour of operation. If you crank the engine with the same battery or other
accessories, such as an electric fuel or water pump, increase the
amp/hour rating.
COILS
For optimum performance with your Ignition Control Module, use a
matching coil such as ACCEL/DFI 6A E-core coil P/N 75607 or Mallory’s
PROMASTER
® Coil P/N 29440 or 30440. Mallory’s PROMASTER ® Coil P/N
29625 or 30625 can also be used, as well as most stock coils or after-
market coils designed as stock replacements.
NOTE: Do not use Mallory’s PROMASTER ® Coil P/N 28880.
TACHOMETERS
The yellow wire on the Ignition Control Module 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 Module. 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 pages 3 & 4.
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 recommen-
dation. From there, you can experiment with small changes in plug gap
and heat range to obtain the best performance from your engine. Use
the chart at right as a starting point. We also recommend non-resistor
spark plugs.
SPARK PLUG WIRES
High quality, spiral wound wire and proper routing are essential to the
operation of the Ignition Control Module. This type of wire provides a
good path for the spark to follow while minimizing electromagnetic
interference (EMI).
NOTE: Do not use solid core spark plug wires with this Ignition Control.
ROUTING
Wires should be routed away from sharp edges, moving objects, and heat
sources. Wires that are next to each other in the engine’s firing order
should be separated. For example, in a Chevy V8 with a firing order of
1-8-4-3-6-5-7-2, the #5 and #7 cylinders are positioned next to each
other on the engine as well as in the firing order. Voltage from the #5
wire could jump to the #7 wire. This could cause detonation and engine
damage. For added protection against cross-fire, ACCEL offers PRO
SLEEVE (P/N170071). Pro Sleeve is a glass woven, silicone coated
protective sleeve that slides over your plug wires. It also helps reduce
damage from heat and sharp objects.
MISCELLANEOUS INFORMATION
SEALING
Do not attempt to seal the Ignition Control Module. All of the circuits
receive a conformal coating of sealant that protects the electronics from
moisture. Sealing the Ignition will not allow any moisture that seeps in
through the grommets to drain and may result in corrosion.
WELDING
To avoid any damage to the Ignition Control Module when welding on the
vehicle, disconnect the positive (red) and negative (black) power cables of
the Ignition Control Module. It is also a good idea to disconnect the
tachometer ground wire as well.
DISTRIBUTOR CAP AND ROTOR
We recommend installing a new distributor cap and rotor when installing
the Ignition Control Module. Be sure the cap is clean inside and out,
especially the terminals and rotor tip. On vehicles with smaller caps, it is
possible for the air inside the cap to become electrically charged causing
crossfire which can result in misfire. You can prevent this by drilling a
couple of vent holes in the cap. Drill the holes between terminals at rotor
height, facing away from the intake. If needed, place a small piece of
screen over the holes to act as a filter.
DIAGNOSTIC LED
On the end panel of the Ignition Control Module there is a small hole.
Behind this hole is a red LED indicator. This serves two purposes:
when you first turn on the ignition switch, the LED will flash rapidly
3 times. This indicates that the ignition system has power, and that the
microprocessor is running properly. In addition, the LED will flash when
receiving a proper trigger signal from the vehicle. If, after a normal
ACCEL/DFI 6A Electronic Ignition Control
Module for Distributor Equipped Engines
PART NO. 75606
INSTALLATION INSTRUCTIONS
FORM 1522D REV. 12/07
ACCEL/DFI TECHNICAL SUPPORT 248.380.2780 www.accel-dfi.com
PARTS INCLUDED:
1 Ignition Control Module 5 1/4" Male Disconnects
4 #10 Sheet Metal Screws 5 1/4" Female Disconnects
2 Wire Ties 1 Rubber Grommet
2 Ring Terminals, Insulated 2 Cable Clamps
1 1-amp/100 volt Diode 1 Magnetic Pickup Extension
2 1/4" Tab Terminals