How to fix the switch on the water cutter handle

Cutter motor of the three wires a direct connection to the power supply, the remaining two go to the switch, from the switch out to the power supply, so the switch will have four wires, two in and two out. Red line is + line, yellow line is - line, blue line is 0 line, according to the switch labeled above to connect it.

Anciently fixed with rivets, is commonly known as the "tail rivet". After the Tang Dynasty, this kind of fixation was used, and the end of the stem of such a knife was mostly in the shape of a long thin, known as the "rat's tail". The screws of the Ming Dynasty were used in the rear of the musket tube to facilitate the cleaning of the chamber.