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Mallory Ignition Mallory 4-STAGE RETARD CONTROL 678 User Manual

Page 3

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MALLORY IGNITION

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EXAMPLE 3: Using the RPM switch to activate

a retard stage at a particular RPM.

EXAMPLE 4: Staging RPM Limiter (Mode 2).

EXAMPLE 5: Using the high-speed timing retard

function with a 3-stage nitrous system.

NC

N

NO

RPM2

RET1
RET2
RET3
RET4

To +12 Volts

NC

N

NO

RPM2

RET1
RET2
RET3
RET4

To clutch pedal or transbrake switch that

supplies +12 volts when active.

To nitrous stage 2 (+12 volts when active, overrides RET1)

To nitrous stage 1 (+12 volts when active)

To nitrous stage 3 (+12 volts when active, overrides RET1, RET2)
To nitrous stage 4 (+12 volts when active, overrides RET1, RET2, RET3)

NC

N

NO

RPM2

RET1
RET2
RET3
RET4