Mallory Ignition Mallory HYFIRE VII Series Electronic Ignition Controls 667S - Manual (Page 3)

WIRING PROCEDURE
Step 1
Ensure that your vehicle is equipped with a ground cable between the engine
block and firewall (10 gauge or larger is required). Refer to Figure 1 while
performing the following steps.
• Connect the HEAVY RED wire to the 12-volt battery (+) post or battery (+)
terminal on the starter solenoid.
• Connect the HEAVY BLACK wire to engine or chassis ground.
• Connect wires between the COIL (+) and (–) terminals.
• Connect 12-volts from ignition switch to the +12V terminal.
• Connect the tach/RPM sensing wire and optional external RPM control to
sockets.
Step 2
When wiring the HYFIRE ® VIIS Pro CD Ignition System to an electronic ignition
or magnetic pickup, refer to Figures 2 and 3, and trace wires for hookup.
YOU MUST USE suppression type
spark plug wire (carbon core, spiral
core) to help prevent false
triggering and premature ignition
or accessory failures. DO NOT USE
solid core (copper core, stainless
steel core) spark plug wire.
YOU MUST USE Mallory
PROMASTER
® Coil Part
No. 28880 with this
ignition system.
12V / IGNITION
+
MALLOR
Y
PR
OMASTER®
COIL
P
AR
T NO
. 28880
STARTER
SOLENOID
(–) 12V/BATTERY (+)
ENGINE OR
CHASSIS
GROUND
TO THE STARTER
(TYPICAL)
ENGINE OR
CHASSIS
GROUND
HEAVY RED
IGNITION BALLAST
RESISTOR
AN IGNITION BALLAST RESISTOR
IS NOT REQUIRED FOR PROPER
OPERATION OF THE HYFIRE
® VIIS.
IF ONE IS ALREADY INSTALLED,
DO NOT REMOVE IT. IF A BALLAST
RESISTOR IS NOT INSTALLED, DO
NOT ADD ONE.
DISCONNECT UNTIL INSTALLATION IS FINISHED
TACH / RPM
SENSING WIRE
12V / BATTERY OR
BATTERY TERMINAL
AT STARTER
SOLENOID
– + – +
HYFIRE ® VII S CD
IGNITION SYSTEM
MAGNETIC PICKUP POINTS +12V COIL
(FRONT PANEL)
TACH
TO OPTIONAL HYFIRE ®
VIIC EXTERNAL CONTROL
PART NO. 674 (IF USED)
HEAVY BLACK
ACTIVATION PLUG
(SEE PAGE 4)
–
FIGURE 1
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