
Door Sensor Mounting:
Mount the part with the magnet inside the trailer on the primary
door and the other one with wire on the ceiling of the trailer using
appropriate hardware.
Device Installation:
Recommended Tools & Supplies:
• Electric Drill
• Digital Multi Meter (DMM)
• Wire Strippers
• Crimping Tool
• 7mm Nut Driver Bit
• ¾” Step Drill Bit
•Drill and drill bit:
o 3/32 or 2mm drill bit for pre-drilling for sheet metal
screws (pre-drilling optional)
o 5/32 or 4mm drill bit when using included bolts
•Weatherproof silicone such as GE Silicone II (clear) or Loctite207
(clear) with at least -40°C to 85”C (-40°F to 185°F) temperature.
• Cable Zip-Ties
• Isopropyl Alcohol
• Clean rag
• 4 sheet metal screws or 4 bolts and nuts or 4 rivets
(not included)
Device Installation:
Special Note:
The recommended mounting location for the TT603 is high on the nose
of the trailer, away from the corner, and just below the top rail with the
GPS antenna pointing up. Install the device per the instructions included
in the box for the TT603.
1. Power Connection Cable -
Unscrew the protective cover from the din cable connection on the
TT603 and connect the Power cable. Make sure to seat the din cable
securely in the TT603 and screw it in completely. Secure the cable with
metal cable clamps.
2. Power Connection -
You will need to connect the TT603 cable to the trailer power through
TT603’s Pink (6-24VDC In) and Black (Ground) wires. Wire the red
wire with the corresponding power joint and black wire with the
corresponding ground joint from the trailer.
Wiring Door Sensor:
The nal step to complete the installation of your TT603 is the
connection of the door sensor wires. It is important that you secure
the wires with cable zip-ties making sure to keep away from any
moving parts. With the wires along with the mounting pad on the
ceiling of the trailer combine Yellow and Black wires and then
connect either one wire (no polarity on 2 wires) to the TT603’s Pink
(RS232 Rx) wire and the other wire to the TT603’s Purple (12 VDC
out) wire through the following steps:
1. Strip 2 wires jacket to 7mm.
2. Insert the whole stripped wire into splice and crimp it with tools.
3. Insert crimped splice inth heat tube .
4. Do the same for the TT603’s pink wire.
5. Move the heat tube to cover the whole splice.
6. Heat tube using a blower or lighter until the tube is shrunk.
7. Repeat steps for combining the other wires and connecting them
to the TT603’s purple wire.