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Figure 2-2:
Vehicle battery connection for non-switching battery to ground.
An alternate method, shown below, uses a vehicle electrical system or harness which
may be a switching supply such as an ignition or a relay-type device. This method,
while feasible, is not recommended and cannot be guaranteed as safe. Results may
include unwanted multiple runs of data, improper reboots, lost data due to multiple
power cycles and improper charging of the internal battery pack.
Figure 2-3:
Alternate vehicle battery connection for non-switching battery to ground.
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