TeeJet LH 1200S - Manual (Page 5)

LH A GRO 5
HOW TO MOUNT THE OVERRIDE SENSOR
Example of where to place the override sensor
Note: If you wish the override sensor can be mounted on the PTO handle or other
simular handles. This is possible as long as there is at least 50 mm movement.
USING AN ELECTRICAL SIGNAL FOR OVERRIDE SENSOR
The override sensor can be replaced with an electrical signal from other sources,
the tractors electronic hydraulics system (lift/PTO, etc, etc). An electrical signal
from a fertiliser spreader, sprayer or similar can also be used.
Note: A ground signal (0V) is nesseccary to override the area counter!
Meaning that a switch that sends a ground signal in the "off" position can be used
(a 12 V signal in the "on" position does not matter)
Importent: Such a signal as mentioned above may only be connected to the
blue terminal on the override entrance in the junction box or pin 7 in the pull away
plug.