PerTronix 1948 User Manual

12-Volt Negative Ground Installation Instructions

12-Volt Negative Ground Installation Instructions

12-Volt Negative Ground Installation Instructions

For Part Numbers: 1948

CAUTION!!! Before installing, please read the following important information....

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. Four & Six cylinder engines require a minimum of 3.0 ohms of primary resistance. Do not remove resistors if
the coil primary resistance is less than 3.0 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

7. Install adapter plate onto breaker plate, install module on top of adapter plate.

See figure 1 & 2. Confirm
that the adapter plate and module assembly is flat and fits without modifications. Fasten the plate into place
using the provided screw.

8. 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 module plate to
the distributor housing.

9. Insert both wires through the wire exit hole and pull the grommet into place. Check to insure that the wires
do not contact any moving parts.

10. Install magnet sleeve over distributor shaft, onto point cam. Rotate sleeve until a slight locating position is
felt before applying pressure. With the sleeve lined up on point cam, press down firmly insuring sleeve is
fully seated.

11. No air gap adjustments required.

12. Replace the rotor and distributor cap. Make sure all spark plug wires are securely attached.

13. See Wiring Instructions.

Figure 2

Figure 1

Install adapter plate.

Install module on top
of adapter plate and
secure both plates
with provided screws.

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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

BLACK WIRE

TO IGNITION

(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

(FIGURE B)

BLACK WIRE

RESISTANCE WIRE

RED WIRE

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