| Re: [GMCnet] Need a GOOD relay to run my two fuel pumps. As my new China one just quit. [message #323725 is a reply to message #323629] |
Sun, 10 September 2017 17:59   |
rvanwin
Messages: 325
Registered: April 2007
Location: Battlefield, MO
Karma:
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Senior Member |
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Bullitthead wrote on Sat, 09 September 2017 09:34If you are using 1 relay to drive 2 pumps, I would split the load and use another relay for each additional pump. Less communication of the power fluctuations generated by each pump that way and also makes troubleshooting much easier with each pump having a direct line to the battery.
The relay Bob is using (or hopefully is using) is a 5 pin. When the relay is not energized the 12v from the EFI (which should be triggered by a normal relay) goes into the 5 pin relay then out to the main tank pump. When the relay is energized by the selector switch (switching to Aux), then the relay will switch the 12v to the other lug which should be connected to the Aux. Pump.
Bob, is this the way you have wired your setup? I think this is what we have discussed as the best way to wire the main and aux pumps.
Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
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