19
TK-980/981
INSTALLATION
4. Ignition Sense Cable (KCT-18 : Option)
The KCT-18 is an optional cable for enabling the ignition
function. The ignition function lets you turn the power to the
transceiver on and off with the car ignition key.
If you use the Horn Alert function or the Manual Relay
function, you can turn the function off while driving with the
ignition key.
4-1. Connecting the KCT-18 to the Transceiver
1. Install the KCT-19 in the transceiver. (See the KCT-19
section.)
2. Insert the KCT-18 lead terminal (
2
) into pin 3 of the
square plug (
1
) supplied with the KCT-19, then insert
the square plug into the KCT-19 connector (
3
).
E
LOK
C3
C4
5C
RD2
DEO
OP
SQ
RD1
TD2
C1
C2
FW
TD1
SB
RSSI
TX-RX unit (A/2)
Foil side view
ST
TX-RX unit (A/2)
Component side view
PTT
MPTT
RXAO
RXAI
TXAO
TXAI
R571
R529
TX-RX unit (B/2)
Foil side view
4-2. Modifying the Transceiver
Modify the transceiver as follows to turn the power or
the Horn Alert or Manual Relay function on and off with the
ignition key.
1. Remove the lower half of the transceiver case.
2. Set jumper resistors (0
Ω
) R151 and R152 of the TX-RX
unit (A/2) as shown in Table 1.
R152
R151
KCT-19
ANT
CN7
TX-RX UNIT
(A/2)
Fig. 4
Operation when KCT-18 is connected.
R151
R152
KCT-18 cannot be connected.
Enable
Enable
Power on/off and Horn Alert or
Disable
Enable
AUX-A on/off.
Horn Alert or AUX-A on/off,
Enable
Disable
Timed power off.
Power cannot be turned on.
Disable
Disable
Table 1
R151 and R152 setup chart
1
2
3
KCT-19
Contact
KCT-18
13
15
1
3
6
Fig. 3