Takai makes hi-output coil-over-plug units for the motoring public. I invested major bank when I bought a pair of their coils for my '06 Wee. When I tried to connect these coils to my wiring, I discovered that Takai didn't supply the correct sized connectors on for the positive side of the stock wiring. Suzuki was smart and sized these connectors so that it would be impossible to connect the leads in reverse polarity by utilizing two different sized connectors. The positive lead is smaller so that you can't possibly install the negative lead here because it won't fit. I am now going back and forth with Marc at Takai to correct this issue. To Takai's credit, Marc is making an effort to correct this issue on good faith. I have supplied photos along with the dimensions of the stock connectors as Marc's requested. FWIW.