Mallory Ignition Mallory HYFIRE 6A and 6AL SERIES ELECTRONIC IGNITION CONTROLS 6852M_6853M - Manual (Page 4)

FOR EARLY GM VEHICLES
ATTACH DIODE TO
#4 TERMINAL FOR FORD VEHICLES
ATTACH DIODE TO
#1 TERMINAL
1A-100V DIODE
TO CHARGING LIGHT
SPLICE HERE
DELCOTRON
ALTERNATOR
1A-100V DIODE
TO CHARGING LIGHT
SPLICE HERE
SMALL RED
FROM HYFIRE ® VIA
12 VOLT
IGNITION SWITCH
CHRYSLER DUAL
BALLAST RESISTOR
WHITE WIRE FROM
HYFIRE
® VIA
FROM POINTS OR
AMPLIFIER
MALLORY IGNITION www.malloryperformance.com 4
TACHOMETER COMPATIBILITY LIST
Aftermarket White 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
TROUBLESHOOTING
This section offers several tests and checks you can perform to ensure
proper installation and operation of the HYFIRE
® 6A Ignition Control. If
you experience a problem with your HYFIRE ® 6A, first check for proper
installation and poor connections. You can eliminate many problems
by checking these items. If you have any questions concerning your
HYFIRE
® 6A Ignition Control contact the Mallory Technical Service
Department at 775-882-6600, Monday through Friday, 8:00 am to
5:00 pm Pacific time.
Tach/Fuel Adapters
If your tachometer does not operate correctly, 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 HYFIRE
® 6A Ignition
Control. Often, the same trigger source is 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.
Inoperative Tachometers
If your tachometer fails to operate with the HYFIRE
® 6A 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
HYFIRE
® 6A 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 HYFIRE
® 6A, you will
need this adapter.
PN 29074 If your tach was triggered from the coil negative
terminal (voltage trigger) and you are suing the white
wire to trigger the HYFIRE
® 6A, you will need this
adapter.
Ballast Resistor
If you have a current trigger tach (originally connected to coil (+)
positive) and use the white wire of the HYFIRE
® 6A for triggering, you
can purchase a Chrysler Dual Ballast Resistor (1973-76 applications).
Wire it as shown in Figure 3.
Engine Run-On
If your engine continues to run even when the ignition is turned off,
you are experiencing engine run-on. Usually, older vehicles with an
external voltage regulator are susceptible to this condition. Because
the HYFIRE
® 6A Ignition Control receives power directly from the
battery, it does not require much current to keep the unit energized.
If you are experiencing run-on, it is due to a small amount of voltage
going through the charging lamp indicator and feeding the small red
wire (even if the key is turned off).
GM 1973-83 with Delcotron Alternators
GM Delcotron alternators use an internal voltage regulator. Install the
diode inline on the smallest wire exiting the alternator (see Figure 5).
It is usually a brown wire.
Most other applications: To eliminate run-on, place a resistor in-line to
the HYFIRE
® 6A small red wire to keep voltage from leaking into the
HYFIRE ® 6A Ignition.
FIGURE 3
Early Ford and GM: To solve the run-on problem, a diode is supplied
with the HYFIRE
® 6A Ignition Control. By installing this diode in-line of
the wire that goes to the charging indicator, the voltage is blocked
from entering the HYFIRE
® 6A Ignition Control. Figure 4 shows the
proper diode installation for early Ford and GM vehicles.
NOTE: Diodes are used to allow voltage to flow only one way.
Make sure the diode is installed facing the proper direction, as
shown in Figure 4.
Ford: Install the diode inline to the wire going to the #1 terminal.
GM: Install the diode inline to the wire going to the #4 terminal.
FIGURE 4
FIGURE 5