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or "Engine Compartment" "Fuse Box", "Fuse/Relay Block" or "Electrical Center". Caution: After removing an ignition switch fuse or otherwise turning off
battery voltage to the ignition switch always use your voltmeter to verify that no voltage is present!
Access to the ignition switch harness on
most cars is obtainable by removing the
underdash "hush panels" and/ or the lower
dash trim panels. On some vehicles, notably
General Motors and Ford/Lincoln/Mercury
products, the electrical part of the ignition switch
is mounted on top of the steering column, near its
base. This switch is connected to the mechanical part
(where the key is inserted) by a linkage rod. Other
vehicles, such as Chrysler, Dodge, Plymouth and
the vast majority of imports, the electrical and
mechanical parts are together, which means that
the ignition switch is high in the steering column,
and that the lower steering column trim may need
to be removed. If soldering this connection, as
recommended, solder quickly with the proper iron
and be aware that a heat sink may be needed to
prevent excess heat in the wire from damaging the
ignition switch.
Ignition Power
The Yellow wire is an ignition input to the security system. With the ignition switch "off", the Yellow wire has no voltage, and the following can occur:
*
The Zone Test feature will operate if the security system is not armed.
*
The security system can be armed, either actively by the transmitter or passively by Last Door Arming.
*
The Valet Switch will still function if the security system is disarmed.
*
The Valet Switch will not disarm the system if it is in an armed or triggered condition.
*
If a door is not open, when the ignition switch is turned "off" the security system will unlock the doors if programmed to do so.
*
If the system is in Valet mode, when the ignition switch is turned "off", the siren will chirp once as a reminder.
Note: View From Below
Steering Column, With
Lower Trim Panel Removed.
Page 10
Combination Ignition Key Cylinder And Ignition Switch.
Mechanical ignition
key cylinder.
Electrical part of the
Ignition Switch.
Yellow
Wire
Red Constant Power Wire
Yellow Ignition Power Wire
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