Quote:
Originally Posted by Frank Reiner
The pumps are wired in parallel; when you jumpered the sockets that caused a pump(s) to run, you were powering both. By alternately removing the ground wires (brown) from each pump you can determine if both are operating. Yes, the ground wires are always connected to ground. No problem with powering the pumps directly from batt.
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Cool! that is exactly what I need to know, thanks. If one of the pumps is not working, would that cause it not to run?