Chapter 3: Wiring the Convergence Network
SmartSiren Platinum Convergence Network
29
Horn Ring Transfer (Cable Assembly 17500307)
The default setting for the slide switch transfers the horn-ring activation of the siren in
Slide
Switch 2
and
3
. In
Slide Switch 2
, a press of the horn button activates the Manual tone. In
Slide
Switch 3
, each press of the horn button cycles through a siren function, such as tones or air
horn,
assigned to horn-ring transfer via the Convergence Configuration Software. In addition,
the default configuration for
Slide Switch 3
is
Siren Dependent Enabled
, which restricts
siren activation to the slide switch position you select. For example, if you press a button that is
assigned a siren tone, the tone only activates when you place the slide switch in the position that
is
Siren Dependent Enabled
.
NOTE:
The horn ring circuit can be programmed as active high or active low as described in
Chapter 6.
To enable horn-ring control of siren tones, obtain a SPST relay of enough contact-current
capacity to activate the vehicle horn:
1.
Cut the wire that connects the switch for the vehicle horn ring to the horn or horn relay
(Figure 3.12 on page 30).
2.
Splice the white/yellow wire from the power cable to the horn ring side of the wire that you
cut in step 1.
DETERMINE CURRENT FOR HORN—The horn ring transfer circuit of the
siren can switch a maximum of 5 A. Some vehicles do not have a horn
relay and consequently will draw more than 5 A when the vehicle horn is
activated. Consult your vehicle service manual or a qualified mechanic to
determine the current required to activate the horn. If it is less than 5 A,
perform step 3. If it is greater than 5 A, perform steps 4 through 9.
3.
Splice the white wire from the power cable to the horn side of the cut wire.
4.
Mount the SPST relay in a suitable location.
5.
Connect the horn side of the wire cut in step 1 to the relay-contact terminal.
6.
Determine the “sense” of the vehicle’s horn ring activation circuit. Does the horn circuit
require a switched positive (active-low) voltage or switched ground (active-high) for
activation?
7.
Connect the switched relay-contact terminal to the positive or negative potential you
determined in step 6.
8.
Connect the white wire from the power cable to one end of the relay coil.
9.
Connect the other end of the relay coil to the opposite potential of that connected to the
switched relay contact terminal in step 7.
10.
Insulate the spliced leads with twist-on wire connectors. Fold and seal unused leads.
