graph G {
    graph [rankdir = LR, ranksep=2, fontname = "arial"];
    edge [arrowhead=none, fontname = "arial"];
    node [shape=record, style=rounded, fontname = "arial"];

    X1[label="X1 | Molex KK 254 8-pin | female | {{GND|+5V|SCL|SDA|MISO|MOSI|SCK|N/C} | {<p1>1|<p2>2|<p3>3|<p4>4|<p5>5|<p6>6|<p7>7|<p8>8}} "];
    X2[label="X2 | Molex KK 254 4-pin | female | {{<p1>1|<p2>2|<p3>3|<p4>4} | {GND|+5V|SCL|SDA}}"];
    X3[label="X3 | Molex KK 254 4-pin | female | {{<p1>1|<p2>2|<p3>3|<p4>4} | {GND|+5V|SCL|SDA}}"];
    X4[label="X4 | Molex KK 254 5-pin | female | {{<p1>1|<p2>2|<p3>3|<p4>4|<p5>5} | {GND|+12V|MISO|MOSI|SCK}}"];
    X5[label="X5 | Molex Micro-Fit 2-pin | male | {{GND|+12V} | {<p1>1|<p2>2}} "];

    W1[label="{4x | 0,14 mm² | 0.2 m} | <w1>BK|<w2>RD|<w3>YE|<w4>GN"];
    W2[label="{4x | 0,14 mm² | 0.2 m} | <w1>BK|<w2>RD|<w3>YE|<w4>GN"];
    W3[label="{4x | 0,14 mm² | 0.2 m} | <w1>BK|<w2>BU|<w3>OG|<w4>VT}"];
    W4[label="{2x | 0,5 mm² | 0.35 m} | <w1>BK|<w2>RD"];

    {edge[style=bold]
        // GND
        {edge[color="#000000:#000000:#000000"]
            X1:p1 -- W1:w1 -- X2:p1;
            X1:p1 -- W2:w1 -- X3:p1;
            X1:p1 -- W3:w1 -- X4:p1;
            X5:p1 -- W4:W1 -- X4:p1;
        }

        // +5V
        {edge[color="#000000:#ff0000:#000000"]
            X1:p2 -- W1:w2 -- X2:p2;
            X1:p2 -- W2:w2 -- X3:p2;
        }

        // +12V
        {edge[color="#0000:#ff0000:#000000"] X5:p2 -- W4:w2 -- X4:p2; }

        // SCL
        {edge[color="#000000:#ffff00:#000000"]
            X1:p3 -- W1:w3 -- X2:p3;
            X1:p3 -- W2:w3 -- X3:p3;
        }

        // SDA
        {edge[color="#000000:#008000:#000000"]
            X1:p4 -- W1:w4 -- X2:p4;
            X1:p4 -- W2:w4 -- X3:p4;
        }

        // SPI
        {edge[color="#0000:#0080ff:#000000"] X1:p5 -- W3:w2 -- X4:p3; }
        {edge[color="#0000:#ff8000:#000000"] X1:p6 -- W3:w3 -- X4:p4; }
        {edge[color="#0000:#8000ff:#000000"] X1:p7 -- W3:w4 -- X4:p5; }

        // +12V
    }
}