Originally Posted by
Rob_DOHC
Would you not be tempted to run them in series? That way if one pump failed/went open circuit both would stop working, rather than one failing which could mean running lean?
http://www.bosch.com.au/car_parts/en.../fuelpumps.pdf
The 044 has a max continuous current rating of 15.5A so imagine a max continuous rating of 31A. 4mm2 tri rated cable would be fine for this with a resistance of circa 10m Ohms would mean a voltage drop of 0.31V. I suspect the pumps would on average draw less than 12A each.
The other option would be to use a circuit which monitored pump current and disabled both pumps together if one failed..?
First sensible suggestion. I was going to suggest that but you get experts who think they know everything posting & its not worth the aggro.
Always use a single pump is the best solution. A control circuit you suggest is built into my new pumps so I can go to 2 pumps for the first time safely.