Suzuki Samurai, problem with the lights

Hello, I have a 1995 Samurai Suzuki and I have the following problem: the left front focus barely illuminates. Turn on, but with a very low level. Change the outbreaks of position and the bad is still the left, so I think it is not a problem with the focus itself.

Any idea?
Thank you!

Hi Goite, so you comment on that lighthouse, you lack the dough set and clean the mass terminal, greetings.

Thank you very much for your jal answer!

Check the terminals and are clean and correctly connected.

An additional fact: the left focus gradually lowered its intensity and yesterday night it went out completely. The right focus has also turned off.

But I managed to find the problem: they were the fuses. I burn the left and then burn the right.

Thanks again.