Most nissans run 2 ohm speakers most head units not designed to run 2 ohms do you have amp hooked up or just using head unit. Should still get sound but probably cut off at higher volumes
Well here’s the next problem even if it did work and not get hot ur speakers are rated 25 watt @ 2 ohms which is what 12.5 @ 4 headunit is roughly 22 watt rms sounds like distortion gonna be a problem