2

TROUBLESHOOTING

thousands of Mallory automotive distributors every year. If a replace-

ment module is needed, most mail order and speed shops carry the

module (part number 605).

plate assembly from the nose cone housing. Do not disconnect the

wires to the coil(s). Turn the ignition key to the ON position. Connect

volt meter leads to the negative side of the coil and to ground. The

voltage should read between 10 and 13 volts. Now place a credit card

module is damaged and/or wired incorrectly.

installing a new one.

Check the following for possible causes of module failure:

a) Are the spark plug wires solid core type? If so, replace with

spiral-core or carbon core.

b) What is the primary resistance of the coil? It should be at least

2.0 ohms for racing and at least 3.0 for street use.

c) Are the 3 wires from the module connected to the correct

locations? Be sure the brown wire is connected to a good

ground.

d) Check the battery voltage with the engine running about 3000

rpm. If the voltage is a greater than 16 volts, a new regulator

Module.

e) Has the shutter wheel been rubbing on the module? If so the

module may have been overheated. Be sure to correct the

interference before replacing the module.



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1. NOSE CONE HOUSING

2. ADVANCE ASSEMBLY

3. O.E. CAM SLEEVE

4. POINT PLATE ASSEMBLY

5. O.E. LOCKWASHERS

6. O.E. WASHERS

7. O.E. STANDOFFS

8. ADVANCE RETAINING BOLT

9. POINT COVER PLATE GASKET

10. POINT COVER PLATE

11. POINT COVER PLATE SCREWS

FIGURE 1