In an effort to reduce our electricity consumption still further, I decided to have a play with some G4 led bulbs as shown, Not sure what my requirements were going to be as regards wattage, but we both decided we wanted daylight bulbs as opposed to cool white or warm white. Apart from the proven beneficial to the mood through production of seratonin, of the daylight bulbs, we both prefer the 6000 or A, A+ colour. As with others reported on here, I have problems with direct replacements, as Evan has previously reported it is suspected that the transformer is to blame and I tend to agree but until I find a source I will have to live with a situation where for each ceiling light there are 5 legs and I can only replace up to 3 of the 3W LEDs and combine them with two halogens, otherwise I get a flash from the lamps when switching on and then nothing. So it looks like I will have to source some replacement circular transformers unless anyone else has any ideas. Oh and there is not enough room in the lamp fitting to put a simple smoothing circuit. The second bulb lit picture is difficult to take with a digital camera, however I do think that amply demonstrates the non smooth supply to the lamps which is affecting them starting and staying on.