Getting ready to fit a factory towbar to my meriva B, i've had to source the plugs and crimp terminals myself as no loom was with it, and i've had to modify a plug for the main power socket,

it is a 3 pin plug, 2 pins are used, and as i dont have the original plug, i am not 100% sure i have live and earth the right way round,
anyone know if this is right?

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