What is the recommended power connection for the eDAQ using vehicle power as the source for eDAQ to vehicle electrical system?

For typical vehicle power systems with permanent negative battery connection to chassis ground:

The following diagrams show the proper recommended power connection for the eDAQ using vehicle power as the source for eDAQ to vehicle electrical system. The diagrams are by no means detailed nor suggestive of how you will accomplish the recommended connection method. It is highly recommended that you read the entire section on eDAQ backup battery and power considerations to obtain a better understanding of limits and implementation of both main and remote power to the eDAQ unit(s).

I) Recommended Method for Non-Switching battery ground - WITH IMPORTANT NOTES

II) Alternate Method (not preferred) - WITH IMPORTANT NOTES

III) Proper Negative Switching Connection Method

II) IMPROPER Negative Switching System Connection