V4500-MH SERIES Installation Guide
Content
Product Overview
Installing the Unit
LED Status Indicators
Tips on Installing
Installing the Standard Starter Disable
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Product Overview
The V4500-MH SERIES is a self-supporting tracking unit that requires only constant power and
ground to operate. “H-Series” refers to units that are hard-wired. The unit contains two
antennas: one for GPS data and the other for GSM or CDMA communication. You can easily
install this unit under the dash of the vehicle for concealment.
Installing the Unit
Mounting the unit
To mount the unit, make sure the label side is facing the ground (down). Do not place the unit
below a metal object as metal objects can interfere with the internal antennas’ signals. Plastic,
glass, and other materials do not cause interference with the signal.
Powering up the unit
After attaching the wires and mounting the unit, power up the unit by connecting the harness.
When powered up, the LED status indicators on the unit light up. See Table 1 below for
descriptions on what these LED status indicators mean. It may take up to five minutes to lock in
a GPS signal. If you cannot obtain a GPS signal, wait for two more minutes, reposition the unit,
and then try again.
LED Status Indicators
Figure 1 displays the unit’s LED light location and Table 1 below describes the status of the unit
based on the LED indicators.
Figure 1: LED light location
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Table 1: LED status descriptions
LED
GSM/Cellular – Blue Light
2G
GPS – Green Light
GSM/Cellular – Blue Light
3G
GPS – Green Light
CDMA/Cellular – Blue Light
CDMA
GPS – Green Light
Description
Status
Searching for GSM Network
Blinking once every 1 second
GSM/Carrier Lock
Blinking once every 3 seconds
Searching for Satellite
Solid
GPS Lock
Blinking
Searching for GSM Network
LED off
GSM/Carrier Lock
Blinking once every 1 second
Searching for Satellite
Solid
GPS Lock
Blinking
Searching for CDMA Network
LED off
CDMA/Carrier Lock
Blinking once every 1 second
Searching for Satellite
Solid
GPS Lock
Blinking
If you need assistance pairing your device(s), please contact UTTI customer service at 805.232.4477.
Tips on Installing
To ensure proper installation of the V4500-MH SERIES unit, follow the listed recommendations:
 Ground the unit directly to the frame. Do not use small screws not attached to the
frame for grounding.
 Splice the wires correctly and properly insulate them. Do not splice carelessly and
without proper insulation.
 Make sure the device and all wiring are secured. Do not let the device and wiring hang
haphazardly.
• Make sure you have proper light sequence before closing the dash.
• Use a constant 12V power supply. Do not use a pulsating 12V power supply.
• Make sure the unit is mounted with the label side facing down.
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Installing the Standard Starter Disable
To install the standard starter disable:
1. Connect the starter disable relay to the 12V starter wire. Cut the wire into two parts,
one connecting to the ignition switch, and the other connecting to the starter
2. Connect one part of the wire (connected to the ignition switch) to the red wire from the
socket relay and then to the 12V supply.
3. Connect the white wire from the socket relay to the other part the cut wire (connected
to the starter).
4. Connect the orange wire from the socket relay to the green wire from the harness
device.
Figure 3: Five-wire harness with standard starter disable relay
STARTER INTERRUPT
red
SOCKET
RELAY
IGNITION SWITCH
white
CUT
orange
STARTER
V4500
-MH
(top)
green
STANDARD 5-WIRE HARNESS
WHITE – Key ignition sense (warning buzzer)
YELLOW – Not used
white
green
black
red (12V)
FUSE
3
14
13
12
11
10
9
8
7
6
5
4
3
2
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Modem Connector Pin-out and Description
PIN
PIN NAME
I/O
FUNCTIONAL DESCRIPTION
1 Nc
2 BAT-TS
I
Do Not Connect
Back-up Battery Temp.
Sense
3 UART-RX
I
Serial Receive Port
6 OUT
O
Ground
Back-up Battery Neg.
Terminal (GND)
Output Port
7 IN1
I
Ignition Sense
4 GND
5 BAT-
8 VBATT
9 BAT+
I
I/O
10 UART-TX
O
Serial Transmit Port
I
Do Not Connect
Do Not Connect
Do Not Connect
Input Port 2
11
12
13
14
NC
NC
NC
IN2
Main Battery Voltage
Back-up Battery Pos.
Terminal
LOGIC STATE
PORT CHARACTERISTICS
Used in conjunction with 10K NTC
Battery Pack Thermistor (103ATType Batt. Pack Therm.) for Charge
Temp Range of 0 to 45deg. C.
3.3V Logic Interface
Com Port Settings:
Baud rate: 115200 bps; Flow control:
None; 8N1
Open: > 1 MOhm to ground
Short: < 1 Ohm to ground,
Note: 250 mA max sink current
Note: Defaulted open circuit
High: Ignition ON 8 to 24 V
Low: Ignition OFF < 0.8 V
Note: Internally pulled low
6-24 V
For Li Ion or Li Polymer Battery,
3.7V Nom Voltage. 4.2V Charging
Voltage
3.3V Logic Interface
Com Port Settings:
Baud rate: 115200 bps; Flow control:
None; 8N1
Logic High: 2.4 to 16 V
Logic Low: < 0.5 V
Note: Internally pulled high
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