Pin 5 = Battery –
Connect to battery ground as close to battery ! as possible.
Pin 2 = Keyswitch
The keyswitch turns on and off the LED display of the battery discharge indicator. Monitoring of the battery continues when Pin 2 is turned off and the display is not lit.
The hour meter display is unaffected by Pin 2, although it cannot accumulate more time as long as the keyswitch pin is not energized. The control input HRM
(+)is enabled by the keyswitch. Pin 2 is connected to the vehicle’s keyswitch.
Pins 1, 2, 6 & 7 = Hour Meter Control (+)
In normal operation, Pin 1, 6 or 7 are connected when using normal hour meter function. It is possible to OR the hour meter between the three inputs so that it accumulates the total time either system is on. Hour meter control logic is detailed in Table 2.
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