12-Volt Negative Ground Installation Instructions
For Part Number: 1281
CAUTION!!! Before installing, please read the following important information....
1.The Ignitor is designed for 12-Volt negative ground systems.
2.Leaving the ignition “ON” with the engine “OFF” for an extended period could result in permanent damage to the Ignitor.
3.See Chart on back page for coil recommendations.
4.Eight cylinder engines require a minimum of 1.5 ohms of primary resistance. Do not remove resistors if the coil primary resistance is less than 1.5 ohms.
5.If your Ignition coil has the recommended primary resistance, remove or bypass all external resistors.
6.The Ignitor is compatible as a trigger for most electronic boxes.
DISASSEMBLY
1.PRIOR TO INSTALLATION TURN IGNITION SWITCH OFF OR DISCONNECT THE BATTERY
2.Remove the distributor cap, and rotor. Do not disconnect spark plug wires. Examine cap and rotor for wear or damage. Replace as needed.
3.Disconnect the point wire from the negative (-) terminal of the coil.
4.Remove the point wire, point, and condenser from the distributor.
5.The Ignitor does not require any modification to the distributor. Therefore the point, condenser and hardware can be used as backup.
6.Clean all dirt and excess oil from the breaker plate and point cam.
IGNITOR INSTALLATION
1.Insert the Ignitor black and red wires through the distirbutor housing verifying the grommet is seated properly.
2.Install the Ignitor module using the provided hardware in the same manner as a set points. NOTE: 1281 kits use the points adjustment screw hole as a pilot for the Ignitor locating pin. Confirm the mounting plate is flat and fits without any modifications. See Figure 1.
3.If the distributor ground wire was removed during the installation process be sure it is re-attached securely.
NOTE: If the ground wire is missing, one needs to be installed and attached from the point breaker plate to the distirbutor housing. See Figure 1.
4.Place the magnet sleeve over the distributor shaft, and onto point cam. Press down firmly to insure magnet sleeve is fully seated. NOTE: Make sure that the Ignitor module and magnet sleeve are level. See Figure 2.
5.Set the air gap between the module and magnet sleeve using the provided plastic feeler gauge (0.030” thick). This done in the same manner as points.
6.Reinstall the rotor, and the distributor cap. Make sure all spark plug wires are securely attached.
7.See Wiring Instructions.
Magnet Sleeve
Ground Wire Location Must be level with
Ignitor on top.
Figure 1
Figure 2
909-599-5955 www.pertronix.com
Page 1 of 4
A.Recommended Wiring Installation:
The Ignitor ignition can be used in conjunction with most ignition coils rated at 1.5 ohms of primary resistance on eight cylinder engines and 3.0 ohms on four and six cylinder engines. For optimum performance purchase and install the recommended Flamethrower high performance coil.
Many vehicles came equipped with ballast resistor or resistance wire. To achieve optimum performance from the Ignitor ignition system, we recommend the 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.
1.Attach the black Ignitor wire to the negative coil terminal. (See Figure A)
2.Attach the red Ignitor wire to the positive coil terminal. (See Figure A)
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.
COIL WIRE
TO IGNITION BLACK WIRE 
(FIGURE A)
RED WIRE
B. Alternative Wiring Installation:
The Ignitor can also be installed in applications retaining the ballast resistor or resistance wire.
1.Attach the Ignitor black wire to the negative coil terminal. (See Figure B)
2.Attach the Ignitor red wire to the ignition side of resistance, or any 12 volt ignition power source. (See Figure B)
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.
COIL WIRE
BALLAST RESISTOR
TO IGNITION SWITCH
BLACK WIRE
(FIGURE B)
RESISTANCE WIRE
RED WIRE
909-599-5955 www.pertronix.com
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