User Guide

8
Other receiver or controller installation using motor power for notch settings and
switches for HORN, BELL, Full RPM, Main Sounds ON / OFF
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
same as the receiver supply, connect the gray "-"
wire to the "-" of the receiver supply.
speaker
Red
Gray
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.
Gray
Red
Red
Gray
+
–
Switch key:
S1 - Horn (momentary)
S2 - Bell
S3 - Force Notch 8
S4 - Main sounds off
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).
#524 SPDT switch.
Switch shown in the OFF position.
Drawn as a spst.
#618 SPST momentary
push button switch.
Switch shown in the OFF position.
S1
S2
S3
S4
Connect motor
if present
M
White
Black
1
2
3
"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 Amplifier connections
Gray
"Audio Input"
auxillary AUDIO AMPLIFIER,
Item #671 or #672
Amplifier DC input power
Red -> +DC
Black -> ground
This needs to be the same
as the sound system power.