Viking VS 3725 Installation Manual page 8

Ignition 3 output:
Some newer vehicles use a third ignition wire
which is required to start and keep the vehicle's
engine running. If this is the case, wire an IGN 3
relay (not supplied) as shown below:
Do not connect any vehicle circuits together, they
are isolated for a resaon.
Transponder interfacing using relay:
If the vehicle has transponder system installed, you will need to by-pass the system while the vehicle is
operating under the control of the Remote Start Unit. To do this:
1.You will need a transponder key that's already programmed to the vehicle.
2.Remove the trim around the ignition switch.
3.Wrap a thin (28 - 30awg) wire tightly around ignition switch 6 to 8 times and secure it.
4.About 6"down line make another loop of approximately 2"diameter.
5.Place the key inside this loop and secure it to the loop.
6. Connect on end of the (28 - 30awg) wire to pin (87) of the relay module.
7. Connect the other end of the loop wire to Pin (30) of relay module.
8. Connect the pin (86) of the relay module to the ignition wire from the ignition switch.
9. connect the pin (85) of the relay module to the yellow wire of 14-pin mini white connector.
GM VATS KEY OVERRIDE:
If the vehicle has the General Motor VATS system installed, you will need to by-pass the system while the
vehicle is operating under the control of the Remote Start Unit. To do this:
1. Measure the resistance of the resistor pellet on the ignition key then select a resistor within 5% of the
key's value.
2. Locate the pair of VATS wires in the vehicle, usually a pair of thin gauge wires running from the ignition
switch to the VATS control module.
3. Connect the YELLOW wire from Remote Start Unit to TERMINAL #85 of an external relay. Connect
terminal #86 of the relay to a fused +12 volt.
4. Cut (#1) wire (as shown), and connect the ignition switch side of the cut wire to terminal #87a of the
relay. Connect the other side of the (#1) wire to terminal #30.
5. Connect the previously selseced resistor from terminal #87 to the second(#2) wire (as shown).
YELLOW wire
Black / Violet wire – (-) 200mA Timer Control Channel 6 Output –
(See Alarm Feature 11 Programming) (Factory default setting on momentary grounded)
This wire is built-in user-programmable timer output provides a ground through this wire. Press the
transmitter and
signal for any time interval between 1 second and 2 minutes. For instance, this timer output may be used
to turn on the headlight with the remote control. Also on certain BMW, Mercedes Benz, Jaguar and
Volkswagen cars, you can use this unique timed output to allow remote closure of all power window and
sunroof without the need for an external module!
Brown / White wire – (-) 200mA Programmable Output
Horn Output – (Factory default setting)
This wire is provided to use the existing vehicle's horn as the alarm system's optional's warning audible
device. It's a transistorized low current output, and should only be connected to the low current ground
output from the vehicle's horn switch. When the system is triggered, the horn will sound.
Factory Security Rearm Signal Output –
VS3725IN
Matching Resistor
87
To + 12 V
85 87a 86
30
buttons at the same time. You may program the built-in timer to send a ground
87
Yellow Wire
87a
86
30
VAT wire (#1)
VAT wire
(#2)
VATS control Module
(
See Start Feature 10 Programming)
8
FEBERARY/06/2006
+ 12 V Constant
Fused 25A Capable
85
Ignition 3 Wire From
Ignition Key Switch
Ignition
Switch
–