PA A320 issue with the main gear lights!!

[Horacios]

Hello, my question, I just install new landing lights in the the PA A320(Shockwave lights) they look very nice! but they only work at night!, during day time the only one light that work is the taxi light! if I try to use the main lights, the swich move to the on position, but half a second later, goes back to the off position, someone knows why this happend?

 

Thanks

 

Cub51:(