PerTronix MV-161AN12 User Manual

12-Volt Negative Ground Installation Instructions

For Part Number:

MV-141AN12 & MV-161AN12

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 distributor cap and rotor from distributor. Do not disconnect spark plug wires from cap. Examine cap
and rotor for wear or damage. Replace as needed.

3. Remove the point wire from the negative (-) terminal of the Ignition coil. Loosen the two screws that attach
the coil bracket.

4. Remove the two screws and springs that hold the points plate in the distributor. Lift the complete plate out of
the distributor. Installing the Ignitor does not alter the internal configuration of your distributor. Therefore, the
points, condenser and hardware can be used as backup.

5. Clean all dirt and excess oil from the point cam.

IGNITOR INSTALLATION

1. Place the Ignitor adapter plate into the distributor. In some cases the new plate may need to be trimmed in
the area shown in figure 1 to permit installation. If trimming is necessary, use a file to remove material. A
snug fit is better than one that is too loose.

2. Use the original screws and spring clips to fasten the Ignitor plate into the distributor housing.

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

4. Module and magnet sleeve air gap is not adjustable.

5. Run the module wires between the coil bracket and to each coil terminal.

6. Tighten the wires down and the coil bracket back in place. Make sure the Ignitor wires are not contacting any
moving parts.

7. See Wiring Instructions.

Figure 1

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A. Recommended Wiring Installation:

NOTE: The factory or replacement coil must have 3.0 ohms of resistance to avoid permanent damage to the Ignitor. The Ignitor

ignition can be used in conjunction with most ignition coils rated at 3.0 ohms on four and six cylinder engines.

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.

3. Check to insure that the polarity is correct, and that all connections are tight.

4. Reinstall the rotor, and the distributor cap. Make sure all spark plug wires are securely attached.

5. Re-connect the battery.

6. Start the engine and allow it to reach normal operating temperature. Check ignition timing, and adjust to the desired setting.

(FIGURE A)

B. Alternative Wiring Installation:

If the factory coil does not have the recommended resistance modifications to the distributor may be required to install a ballast

resistor and or external coil.

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.

3. Check to insure that the polarity is correct, and that all connections are tight.

4. Re-connect the battery.

COIL WIRE

BALLAST RESISTOR

TO IGNITION SWITCH

RED WIRE

(FIGURE B)

BLACK WIRE

RESISTANCE WIRE

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