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Other receiver or controller installation using motor power for auto chuff rate and
switches for Whistle, Bell, Cylinder Blow Down, Main Sounds ON / OFF
speaker
#618 SPST momentary
push button switch.
Switch shown in the OFF position.
S4
S3
S2
S1
#524 SPDT switch.
Switch shown in the OFF position.
Drawn as a spst.
Switch key:
S1 - Whistle (momentary)
S2 - Bell
S3 - Cylinder blow down
S4 - Main sounds off
Black
White
+
Red
DC battery power input.
Input voltage of 7 to 24 volts DC. Absoulute maximum
–
input is 35 volts DC! If the battery supply is not the
Gray
same as the receiver supply, connect the gray "-"
wire to the "-" of the receiver supply.
8
Connect motor
M
if present
Auxillary Amplifier connections
"Audio input" Connect to gray wire from sound system speaker output. Do not use the
red speaker wire from the sound system. This wire does not get connected! Either cut or
tape the red wire securely so that it cannot short to something. Never connect either of
the speaker output wires to ground. This will damage the sound system's amplifier and is
not covered under any warranty.
If desired, a speaker can still be connected to the main sound sytem speaker output as
well as another speaker from the amplifier.
auxillary AUDIO AMPLIFIER,
Item #671 or #672
Amplifier DC input power
Red -> +DC
Black -> ground
Gray
This needs to be the same
"Au dio In pu t"
as the sound system power.
receiver motor leads. Connect
the motor leads to pins 2
(black) and 3 (white) of J3.
The sound system presents
a load of 480 to 980 ohms
(depends
on
speed
set
control setting).
If you are using a receiver that
operates higher than 24 volts, it is
necessary to add a 470 ohm, 1/2
watt, resistor in series with one of
the inputs to J3 from the motor lead.
1
2
3
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