我不知道完整线路的安排，但光线通过切换积极电池方之一，与另一边接地灯灯一方控制。

I'm not sure of the complete wiring arrangement, however the light is controlled by switching the positive battery side to one side of the lamp with the other side of the lamp grounded.

youdao

我不知道完整线路的安排，但光线通过切换积极电池方之一，与另一边接地灯灯一方控制。

I'm not sure of the complete wiring arrangement, however the light is controlled by switching the positive battery side to one side of the lamp with the other side of the lamp grounded.

youdao