Technical information

AUTOTRONIC CONTROLS CORPORATION • 1490 HENRY BRENNAN, EL PASO, TEXAS 79936 • [phone] • FAX [phone]
www.msdignition.com email: [e-mail]
No Run on Some Foreign Vehicles
There is a chance that some electronic fuel injected
import vehicles may require an MSD PN 8910 Tach
Adapter in order to start and run. This is because some
fuel management systems use the same trigger source
for the EFI and the MSD. With both components con-
nected, the voltage signal is not strong enough to ac-
curately trigger the EFI. The MSD PN 8910 Adapter will
boost this signal and generally remedy the problem.
NOTE: If the PN 8910 Adapter does not fix the no-
run situation, MSD offers a few "special appli
cation" adapters. Call our Customer Support
Department for the correct Adapter for your
application.
Tachometer Compatibility List
AFTERMARKET TACHOMETER WHITE WIRE TRIGGER MAGNETIC TRIGGER CONNECTOR
AUTOGAGE 8910 8920
AUTOMETER NONE NONE
FORD MOTORSPORTS NONE NONE
MALLORY NONE NONE
MOROSO NONE NONE
STEWART 8910 8920
S.W. & BI TORX NONE NONE
SUN 8910 8920
VDO 8910 8920
AMC (JEEP) 8910 8920
CHRYSLER 8910 8920
FORD (Before 1976) 8910 8920
FORD (After 1976) 8910 8920
GENERAL MOTORS Bypass In-Line Filter Bypass In-line filter
IMPORTS 8910 8920
Note:Note:
Note:Note:
Note:
On the list above, the trigger wire on tachometers that are marked NONE may be connected to the
Tach Output Terminal on the MSD 6 Series Ignition Unit using the supplied Female Faston Receptacle.
GENERAL INSTALLATION TIPS
Current Triggered Tachs
If you have a current triggered tachometer (originally
triggered from coil +) and are using the White wire of
the MSD as a trigger, a Chrysler Dual Ballast Resistor
(used from '73-'76) may be used to cure the tachom-
eter. The diagram below shows the correct wiring.
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