Code 3 MasterCom B Series - Manual (Page 7)

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RPWR- Provides +12V to the two-way radio with the ignition on / off . Connect the +12V power lead
from the radio to this terminal. This is a 10 Amp maximum current output.
InterClear ® (Optional) - Connect to the device or circuit that is to be activated by the InterClear
feature.The InterClear circuit is internally current limited at 1 Amp. Should your requirements require
higher currents, use the InterClear Power Booster Kit (# INTBS), available from your Code 3 supplier.
1/4" Male Quick-Connect Printed Circuit Board Terminals
+12V - Connect to a positive +12 volt DC source. It is recommended that the user protect this wire
with a 10 Amp fuse(20 Amp for 200w option) or circuit breaker located at the source. Use #14 gauge
wire terminated with 1/4" female, fully insulated quick-connect terminals only.
NEG - Connect to the negative terminal of the battery. This supplies ground (earth) to the siren.
Use #14 gauge wire terminated with 1/4" female, fully insulated quick-connect terminals only.
Power Distribution Connections ( "L" Models)
A #8 stud is provided on the rear of the unit and is intended for use ONLY as a convenient ground
(earth) " tie-point " for the light bar wiring. It is not an adequate ground (earth) for the siren or
the light bar. It is recommended all ground (earth) wires attached here be terminated with a
crimp-on ring terminal.
11-Position Terminal Plug - Rear Panel- (See Wiring Diagram page 20)
IMPORTANT!
Remember auxillary outputs A,B,D on L4 models and A,B,D,E,F on L6 models can supply a
maximum of 20 Amps each for a combined total of 30 Amps. Install appropriate fuses in each
output wire as close to the siren as possible.
SW D - Connect to the load to be controlled by Auxiliary Switch "D".
SW B - Connect to the load to be controlled by Auxiliary Switch "B".
SW C NO - Connect to the load to be controlled by the normally-open contact on Auxiliary Switch
"C".
SW C NC - Connect to the load to be controlled by the normally-closed contact on Auxiliary Switch
"C".
SW C COM - Common or power feed for Auxiliary Switch "C". Terminals are a SPDT circuit that may
be connected as a momentary (or timed momentary with option) ignition controlled circuit, or used for
switching auxiliary circuits. It will Handle 10 Amps, and should be protected with a fuse at the battery
if individually fed. Can also be connected to a ground source if the load on SWC NO or SWC NC is
already connected to a 12V source and needs a ground input to activate it.
SW F - ('L6 models only) Connect to the load to be controlled by Auxiliary Switch "F".
SW A - Connect to the load to be controlled by Auxiliary Switch "A".
SW E - ('L6 models only) Connect to the load to be controlled by Auxiliary Switch "E".
HORN RING - Connect to the wire coming from the vehicle horn switch at the steering wheel.
HORN - Connect to the vehicle horn or vehicle horn ring relay.