I have two identical external lights on my house which are used to light up a dark passageway. They are operated from an internal dimmer switch. Regardless of what wattage bulb I put in the light output is very weak. They are a standard bayonet bulb or candle bulb. They have worked fine for the last 8 years but now give a very weal light. Can you advise me of what the problem is likely to be? Thanks in anticipation.
