Hi guys, First post here, I hope someone can help identify what may be wrong before I call out a sparky. Please excuse me in advance for my lack of technical knowledge; I’m pretty much an amateur diyist. Recently I fitted a ceiling fan/light unit in my bedroom. The bedroom light and fan work fine however whenever the living room lights are operated (either switched ON or OFF it seems to cause the power to the bedroom ceiling fan/light unit to momentarily stop and flicker for less than a second. But I have double checked the wiring for both the bedroom and living room lights and they seem fine. I’ve had my entire house rewired about 8 years ago and the lighting circuit for the top floor of my house is connected to the same circuit on the RCD box, this is for about 5 rooms includes the bedroom and living room. I currently don’t have a voltmeter to test the current, but today I replaced the ceiling fan with a standard light bulb and found this was NOT affected by the living room light. Also no other room lights seem to be affected by this, nor do they cause the bedroom ceiling fan/light to flicker. The living room has a standard 58w T8 florescent tube fitted. Any ideas?

Home depot sells a can light converter to pendent light. It screws in the bulb receptacle and has a cover that slides up the cord to hide the old canned light fixture. But it only comes in 48 inch cord and we need about 70 inch because of the high ceiling. Does anyone know how I can make the cord longer? The cord is sealed into both ends. I will try to post a pic of the light.