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Just went through the same thing recently. I removed my JMS voltage booster when I installed the DSX dual in-tank setup.
The newer JMS units (like the one I had) don’t drain the battery, I measured the draw myself, and it shuts off completely when the car is off, so no parasitic loss.
Ted Jannetty told me I could keep the JMS if you tie it into the second FSCM, or just remove it, either way works depending on how much fuel your setup needs. But then I realized the JMS doesn’t have enough amp output to support both pumps anyway. You’d need the stronger dual-output version for that.
And yes, connecting the red and white wires together will work fine.
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2018 Camaro ZL1 A10
Rotofab Big Gulp, Nick Williams 103, Magnuson 2650, 9.17" (14%) lower, 90mm upper, Vengeance Racing Heads (LME) Cam Package (Cammotion Stage 1), Johnson Lifters, DSX dual intank pump, Lingenfelter high flow check valve, Motion Raceworks Flex Fuel adapter, LPE Big Bore Hpfp, XDI 30% Injectors, BBK shorty headers, Custom 2.75" down pipes, Gesi Gen2 high flow cats, MM catch can.
2006 Silverado Duramax Diesel
MPI Compound Turbo
40% over Injectors
Efi Live DSP5 Tuning
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