Msd 8812 Universal, Push Button, Alt. Action Switch In User Manual download pdf (Page 1)

WARNING: During installation, disconnect the battery cables. When Disconnecting, always

remove the Negative cable ﬁrst and install it last.

The MSD Alternate Action Switch is designed to be used in conjunction with NASCAR’s amendment

rule regarding an auxiliary ignition On/Off button, 20 – 6.6. The MSD Switch can be used as either a

Normally Open or Normally Closed position.

MSD Alternate Action Switch

PN 8812

Figure1 Wiring to the MSD White Wire (Normaly Open).

Parts Included In This Kit

1 – Alternate Action Switch

Indicator Light: A light can easily be installed to illuminate when ignition system is turned off through

the alternate action switch. See Figure 1.

M S D I G N I T I O N • w w w . m s d i g n i t i o n . c o m • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • FAX ( 9 1 5 ) 8 5 7 - 3 3 4 4

2 –GP15K Diode

Normally Closed: GM Heavy Duty Ignition Controls do not have a White wire input so this Switch must

be run in a Normally Closed position on the small Red wire. This is the 12 volt On/Off

wire for the Ignition. When the button is pressed, the Red wire will be opened shutting

off the ignition. See Figure 2.

Normally Open: It is recommended to run the Switch in a Normally Open position. The Switch will be

wired into the White wire of the MSD Ignition and to ground. When the button is pressed, the White

wire will be grounded, killing the ignition. See Figure 1.

Note: A GP15K diode must be in line on each white wire before the switch. If the diode is not installed damage

to the ignitions will occur. The diode must be installed with the stripe (or band) towards the kill switch.

1 2

WARNING: During installation, disconnect the battery cables. When Disconnecting, always remove the Negative cable ﬁrst and install it last.The MSD

Figure 2 Wiring to GM Ignitions (Normally Closed).Limited Warranty MSD IGNITION warrants this product to be free from defects in material and workman

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Msd 8812 Universal, Push Button, Alt. Action Switch In User Manual Page 1