PerTronix Ignitor II 9DU-142LS - Manual (Page 2)

WIRING INSTRUCTIONS
1. The Ignitor II ignition can be used in conjunction with most ignition coils rated at 0.45
ohms or greater. For optimum performance purchase and install the Flamethrower II high
performance coil.
2. Attach the black Ignitor II wire to the negative coil terminal. Attach the red Ignitor II wire to
the positive coil terminal. (See Figure 1)
A. Recommended Installation: Many vehicles came equipped with ballast resistor or resistance
wire. To achieve optimum performance from the Ignitor II ignition system, we recommend
removal of these components.
• To remove a ballast resistor, (normally
white ceramic blocks 3 to 4 inches long),
disconnect all wires on both ends of the
ballast resistor. Remove the resistor from
the vehicle and splice the disconnected
wires together at a single point.
• To remove a resistance wire, trace the coil
power wire, which was previously connected
to the positive coil terminal, back to the fuse
block. Bypass this wire with a 12-gauge
copper stranded wire.
B. Alternative Installation: The Ignitor II can also
be installed in applications retaining the ballast resistor or resistance wire.
• Attach the Ignitor II black wire to the negative coil terminal. Attach the Ignitor II red wire to
the ignition side of resistance, or any 12 volt ignition power source.
3. Check to insure that the polarity is correct, and that all connections are tight.
4. Re-connect the battery.
5. Start the engine and allow it to reach normal operating temperature. Check ignition
timing, and adjust to the desired setting.
+ -
To Ignition
COMMON QUESTIONS AND ANSWERS
Q. The engine will not start or runs rough. What is the problem?
A. Check all connections to insure that they are tight, and in the proper location. Check all grounds; if a distributor
ground wire was removed make sure that it was reattached properly. Make sure that the red Ignitor II wire is supplied
with a full 12 volts. The Ignitor II is designed to sense high current levels, and shut off before damage occurs. Check
all wires for shorts, correct polarity and that the ignition coil’s primary resistance level is acceptable.
Q. The vehicle will start, but then die. After waiting it will start again. What is wrong?
A. The Ignitor II may have a “Low Voltage Problem.” If the voltage supplied to the red Ignitor II wire is insufficient, the
system may run for a period of time, and then shut down as the voltage drops due to engine heat. The period may
vary from minutes to hours depending on available voltage and wiring condition. To remedy this condition refer to
steps 2-4 of the wiring instructions.
Q. How do I check for a “Low Voltage Problem” or determine if I am getting adequate voltage?
A. To quickly test for a “Low Voltage Problem” or for adequate voltage, remove the Ignitor II red wire from the coil
positive terminal. Attach a jumper wire from the battery positive terminal to the Ignitor II red wire. Try to start the
vehicle. If the vehicle starts with this test refer to steps 2-4 of the wiring instructions for further information.
Q. How do I check my coil for primary resistance?
A. Remove all wires from the coil. Set the ohmmeter to the lowest scale. Attach one lead of the meter to the positive
coil terminal. Attach the other lead to the negative coil terminal. The Ignitor II is compatible with coils having a
resistance of 0.6 ohms or greater.
Q. May I modify the length of the wires?
A. Yes, you may cut the wires to any length your application requires. You may also add lengths of wire if needed (20-
gauge). Make sure that all wire splices are clean and the connections are tight.
Q. Will the Ignitor II work with aftermarket capacitive discharge boxes?
A. Yes, the Ignitor II is compatible with most CD boxes in the same respect as points. Use the CD box wiring
instructions for point systems and treat the Ignitor II black wire as a point wire. The Ignitor II red wire should be
attached to the 12-volt power source.
Q. Will the electronic shift assist in an OMC boat work with the Ignitor II?
A. The Ignitor II will work with all OMC stern-drive applications, when our “diode fix” is used. If you’ve purchased a kit
that didn’t include the “diode fix” diagram, call our tech line.
Q. How can I receive additional help?
A. Check our web site for current trouble shooting tips and up to date technical information. Log on to www.pertronix.
com. You may also contact our tech line at (909-547-9058)
FIGURE 1
(WITHOUT EXTERNAL RESISTOR)