I'm trying to fix my night lights and i found the reason for the problem ( burned switch contact) but when I'm trying to hook up it up to the headlight switch by adding a relay hoping it would solve the problem. BTW I didn't even get a chance to hook the wires together to my headlights switch and now my headlights went out. I don't know why it no long work...now I'm trying scratch my head to diagnose the problem. Can anyone help me. I don't know a lot about electrical but just enough to hook relay to headlights. I did manage to took some pics to see it anyone can help me.

What year? The wiring is slightly different depending upon the year. Anyway, use a voltmeter to see if you have voltage along the circuit. You can find wiring diagrams at xenonS30.com.

There is a good chance you haven't reconnected your grounds. (That's my first guess.)