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C AU TIO N
The “Accessory” point should drop to ZERO volts when
cranking the engine and return to +12 volts after the
engine is started. If a point is chosen that drops to a
voltage between zero and +12 volts, the radio may
execute a power-up cycle several times during start up. It
is recommended that the terminal be measured with a
voltmeter to be sure it shuts OFF (goes to zero volts)
during the cranking of the engine.
Certain problems may be encountered when accessory
equipment is connected to the ignition or accessory lines
of the vehicle, where these lines may have large filter
capacitors and a leakage path present. If the radio does
not turn OFF within a reasonable amount of time after the
ignition is turned off, first try a different accessory or
ignition A+ pick up point in the vehicle. Many vehicles
have more than one circuit that is switched by the ignition
switch, and one may be available that does not have large
filter capacitors or a leakage path present.
If a different pickup point cannot be found, then add a
470-ohm, 1-watt resistor from the ignition A+ pick point
to ground. This will discharge the capacitor(s) or reduce
the leakage voltage to a low value. Current drain through
this resistor will be minimal (less than 0.03A) when the
ignition is switched ON.
