Hi users, this is my first time to this forum. I have a 2000 Subaru Forester N/A with modest mods, like, headers, exhaust, crank pulley, master cylinder brace, CAI, fule pump, fuel pressure regulator, with suspension Mods. I have installed a fuel pressure gauge, water temp gauge, and an AFR. I have read many articles that the gauge is npt useful. But the fact that their is jo tu e, amd a wideband will be use less, because I can not get my car tuned. So I just was to install the gauge to try to manage the mixture of fuel and air content going to my engine. Everyone says is useless, because it only reads Stoich, lean, and rich, but at least I will know where the engine is, and too adjust or manage the fuel lpreasure pn my car. So if anyone knows, what wire do I need to splice into, and to avoid my car showing to check engine light.