THE "IGNITOR" IGNITION SYSTEM
FOR PART NUMBERS 1581 & 1582
PRESTOLITE 8 CYLINDER DISTRIBUTORS
1. Disconnect battery or make sure ignition switch is off.
2. Remove distributor cap from distributor. Leave high voltage wires connected in the distributor cap.
3. Remove rotor (1) and dust cap (2), if applicable. Examine rotor, distributor cap, etc. Replace any components that show excessive wear.
4. Remove point wire from negative coil terminal. Remove screws (3) and breaker plate assembly (4)
5. Make sure mechanical advance is in proper working order. Oil if needed. Clean all oil and dirt from point cam and inside of distributor housing.
6. Determine which direction your distributor turns. Place the Ignitor adapter plate (5) inside the distributor.
If your distributor turns counter clockwise, align the large cut out marked 'CC' with the slot, or hole, in the side of the distributor housing. The two small cut outs in the Ignitor adapter plate will then be over the threaded holes in the distributor. Use the two screws (3) to fasten the plate in place.
If your distributor turns clockwise, align the large cut out marked 'C' with the slot, or hole, in the side of the distributor. One of the holes in the Ignitor adapter plate will be over a threaded hole in the distributor. Use one of the screws (3) to fasten the plate in place.
7. Push the grommet into the slot in the distributor housing. If your distributor has a round hole, remove the square grommet from the Ignitor wires. Push the Ignitor wires through the round grommet (7). The tapered end of the grommet should point away from the Ignitor. Slide the grommet approximately half way up the wires. Push the Ignitor wires through the hole in the distributor housing and pull the grommet into place.
8. Install the magnet sleeve. Push your rotor into the magnet sleeve and then push the rotor on the shaft as usual.
NOTE: Part number 1581 includes a rotor. This rotor will fit the magnet sleeve better than some aftermarket rotors. However, this rotor can only be used with distributor caps that have a spring loaded center contact.
9. Gently pull the Ignitor wires through the grommet. Make sure wires are not touching the magnet sleeve. Adjust wire length inside the distributor to insure ample clearance.
10. Replace distributor cap. Make sure all high voltage wires are securely seated.
11. Crimp terminals onto the Ignitor wires.
12. Connect the black Ignitor wire to the negative (-) terminal of the ignition coil. For installations that do not use a primary ballast resistor, connect the red Ignitor wire to the positive (+) coil terminal. For installations that use a primary ballast resistor, it is preferable to connect the red wire to the ignition switch side of the resistor, rather than the positive terminal of the coil.
13. The engine can now be started. Let the engine run for a few minutes and then set the timing in the conventional manner.
See diagram of distributor before and after.