Hi Guys

I have a problem with my left side main lamp dimmer sometimes it doesn't on when putting it on dimmer and with high beam on it works fine sometime i had to open the bonnet and push or pull the connector to glow that left side main bulb, when it works if i put it off and then put it back it doesn't glow sometime,
without doing nothing sometimes it glows automatically and if you off the switch and put it back most of the time it doesn't glow what you guys think is it loose connection or something else with my main bulb ?

thanks
regards
sumith