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Any of you that have installed a Quadzilla X2 know that on each plug theres an additonal wire left with a terminal on it..Whats these terminals for? I was thinkin maybe i could just run my electrical fuel psi gauge to that extra terminal on the rail sensor..Isnt that where the X2 gets its fuel psi readings from? I tried it but the truck starts to idle weird so i unhooked it really quick lol.Any thoughts??