Upgrade Kit Instruction Manual

Part# 571-1001
SmartSense Installation Page 3
j. Reconnect the ¼” tubing from the trailer pressure tank to the inlet of the control box
and turn on the valve. Make a fresh cut on the tubing before inserting.
k. Reconnect the trailer air supply lines from the tractor to restore pressure to the trailer
air tank.
NOTE! disconnect power to trailer before wiring the SmartSense control box!
l. Push the power cable into the cable gland on the bottom of the control box. Strip
back the insulation and crimp on the spade receptacles. Push the receptacles onto the
lugs on the circuit board. BE SURE to observe the color codes! The wire should be
routed behind the regulator from the cable gland entry point to the board.
m. Tighten the nut on the cable gland, but, first be sure to leave a ‘drip loop’ inside the
control box.
3. Install the new SmartSense Driver Warning Light:
NOTE! ensure power to the trailer is disconnected!
a. Remove the existing warning light
b. Install the new warning light using new screws. Be sure to observe and connect the
power and ground wires to the correct terminals on the new warning light. The wires
are color coded. ‘Black’ is the +12 power line and ‘white’ is the ground.
4. Testing:
a. Connect power to the trailer. NOTE: The LEDs on the circuit board in the control box
light up the same as the LEDs in the Driver Warning Lamp.
b. Upon power-up, the LEDs in the Driver Warning Lamp (and control box) should flash 3
times and then go out.
c. If some of the LEDs continue to flash after the power-up sequence, it indicates the
tires on that wheel end are taking air. The blinking should stop after the tires are at
the correct pressure.