brown280zx Posted February 12, 2017 Share Posted February 12, 2017 So I have an rb25det neo going into a 82 280zx. I am using wiring specialties harness, with their universal fuses block. Question: For the fuel pump 12v+- wire, at which wire at the fuel pump relay does this connect to. universal fuse block.pdf It is a 79 wiring diagram but it is nearly identical just different wire colors. Quote Link to comment Share on other sites More sharing options...
mtnickel Posted February 13, 2017 Share Posted February 13, 2017 So I have an rb25det neo going into a 82 280zx. I am using wiring specialties harness, with their universal fuses block. Question: For the fuel pump 12v+- wire, at which wire at the fuel pump relay does this connect to. universal fuse block.pdf Screen Shot 2017-02-12 at 1.24.30 PM.png 79_280zx_wiring.gif It is a 79 wiring diagram but it is nearly identical just different wire colors. Did you look at the diagrams you posted? Need help understanding them? You can see the Green wire goes from the relay to the fuel pump. The other side of the pump gets a black wire = ground. Quote Link to comment Share on other sites More sharing options...
510sr20det Posted October 29, 2017 Share Posted October 29, 2017 You need an aftermarket fuel pump like a WB 255 /450. the stock pump will not cover a boosted RB25 motor safely . Quote Link to comment Share on other sites More sharing options...
510sr20det Posted November 7, 2017 Share Posted November 7, 2017 wiring specialities 12v wire goes directly to fuel pump 12v side bypassing stock relay.. Quote Link to comment Share on other sites More sharing options...
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