Pertronix 1247 - Automobile Electronic Installation Manual

BEFORE YOU START

• Read the complete instruction manual before starting installation.
• This system is for 12 volt negative ground systems only.
• This kit is designed to fit N-Series Ford tractors with front mount distributors.
• Some modification to the original distributor is necessary.
• A ballast resistor may be required.

Removing the distributor

1. Disconnect the coil power wire.
2. Remove the spark plug wires from the distributor cap.
3. Remove the coil by unsnapping the retainer bail.
4. Unsnap and remove the distributor cap.
5. Note the position of the rotor so that the distributor can be reinstalled in the same position. Remove the rotor.
6. Remove the two bolts that hold the distributor to the block.
7. Remove the distributor.

Removing the breaker plate

1. Remove the breaker plate retaining ring.
2. Remove the breaker plate hold down screw.
3. Remove the breaker plate.
4. Remove the shim washer from the distributor shaft.
5. Remove the distributor shaft and advance mechanism.
6. Check the distributor for cracks and excess wear.

Modifying the distributor

1. To allow the Ignitor wires to exit the distributor, the vent screen closest to the coil retaining bail must be removed. If the distributor does not have a vent, drill a 1/4" hole into the distributor housing at the location shown in Illustration B.
2. This is a good time to clean the distributor thoroughly. Make sure that no metal debris is left in the distributor.
3. Install the advance mechanism and shaft back into the distributor.

Ignitor fitment

1. Set the adapter plate it into the distributor. Insert the provided hold down stud through the plate and distributor housing.
2. Install the timing adjustment slide over the stud. Install the provided lock nut.
3. Static time the distributor by positioning the plate so that the slide is positioned in the middle of the adjustment slot. The adjustment nut should be centered with the cap spring clip (See Illustration B). Tighten the nut once it is aligned properly.
   
4. Install the plate retaining ring. The flat portion of the ring should be placed on adjustment slot side of the distributor.
5. Install the ignitor module onto the mounting studs.
6. Tighten the module into place with the hardware provided.
7. Attach the black ignitor wire to the coil negative contact stud mounted on the plate. Tighten the wire down with the provided nut. (See Illustration C)
   
8. Insert the red wire through the hole that was made in the distributor body.
9. Install the magnet sleeve onto the point cam. 10.Install the shim washer onto the distributor shaft. 11.Install the shaft support bracket. Spin the distributor shaft to align the bracket and tighten in place with the 8-32 screws provided.

Distributor Installation

1. Install the rotor
2. Turn the rotor to the position that was noted prior to the removal of the distributor.
3. Place distributor into block and fasten in place with the original mounting bolts. Note: Do not force the distributor into place. Check to make sure that drive tang is properly aligned.
4. Install the distributor cap.
5. Install the coil and coil retaining bail.
6. Install the spark plug wires.

Wiring

Most stock and aftermarket coils are designed for six volt systems. These coils have a primary resistance of approximately 0.6 ohms. and when used with the Ignitor must be equipped with a ballast resistor. We recommend a resistor 2.4 ohms or greater to prevent ignition failure. Coils having a 3.0 ohm primary resistance can be used without an external resistor.

1. Install the ballast resistor.
2. Attach the ignition switch wire and the Ignitor red wire to one side of theresistor. (See Illustration C)
3. Using 18 gauge wire or larger, connect the opposite side of the resistor tothe coil positive terminal.

440 East Arrow Highway
San Dimas, California 91773
(909) 599-5955