Mallory Ignition Mallory ACTIVE FUEL INJECTION/TACH ADAPTER 29078 - Manual (Page 2)

NOTE: In writing these instructions, we assume that
you have installed a Mallory ignition box or similar.
Connect the Mallory Adapter Part No. 29078 as
shown below.
Older voltage triggered tachometers
This type of tachometer cannot be triggered from the low
voltage tach output of modern capacitive discharge ignition
systems. Mallory's tach adapter eliminates this problem. See
Figure B.
®
BLACK –
GROUND
ORANGE – NOT USED
PART NO. 29078
TO IGNITION SWITCH TACH
RED
IGNITION POWER WIRE
(PREVIOUSLY CONNECTED
TO COIL + TERMINAL)
GREEN – TO TACH TERMINAL OUTPUT
CAPACITIVE DISCHARGE
IGNITION BOX OR SIMILAR
®
TACH TERMINAL
ORANGE –
TO TACH TRIGGER LEAD
AND/OR FUEL INJECTION TRIGGER
TO IGNITION SWITCH
®
BLACK –
GROUND
PART NO. 29078
RED
GREEN – TO TACH TERMINAL OUTPUT
CAPACITIVE DISCHARGE
IGNITION BOX OR SIMILAR
®
TACH TERMINAL
www.malloryracing.com
Made in U.S.A. Printed in U.S.A. FORM 1410 (Rev. C) 02/06
Figure A
Fuel injection systems
Some fuel injection systems may require a high voltage
triggering signal that is not available from modern capacitive
discharge ignition systems. Mallory's adapter provides the
triggering signal. See Figure B.
Figure B
CURRENT TRIGGERED (SERIES) TACHOMETERS
You can use this adapter with an ignition system that provides a
voltage triggered tach output, such as most capacitive discharge
ignition systems. See Figure A.