4
RED WIRE - (Po12 Volt Input): The function of the Red wire is
to supply the system with a constant source of (+)12 volts.
Connect to a constant (+)12 volt positive wire located in the primary wire
harness coming from the key switch.
-A connection here insures a good power source which is critical for correct
unit operation.
• Do not connect behind a vehicle fuse or to the vehicle’s battery.
• It is recommended that the red wire be the final system wiring connection.
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.
Electrical part of the
Ignition Switch.
Linkage rod connecting
the two parts together.
Mechanical part of the ignition switch,
which is the ignition key cylinder.
Cutaway View Of A Steering Column-Mounted Ignition Switch.
