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I am going to runt he electrical to power pumps for the DRM transmission and diff coolers. I am wondering if I can run 1 switch to power both relays since both pumps will be normally off and I would always run both pumps when I wanted to run them. Wiring and electrical are not my favorite so if I am way off base dont be shy to let me know.
On the relay most seem to have 5 pins with pin 87a normally powered with teh switch in the off position, then when you turn the switch on the power goes from 87a to 87. My question is, I dont believe I need something powered normally (87a) so I would assume I can just not hook anything up to that pin and then just hook my pump load up to 87 and when I flip the switch the pump does it job. What do you think?