It has been more than two and almost three months since we had the new garage door installed. A few weeks ago there had been a problem with the cushion in one of the guides, there to prevent metal to metal contact and wear when the door is opened and closed. We had informed the installer’s repair and maintenance department but it was more than three weeks before they contacted us to make an appointment! I in the meantime corrected the fault myself because at the time I wished to reinstall the circuitry which automatically switches on the main garage light whenever the door is opened when it is dark. Naturally that only happens when the door is opened and when closed the light switches off. On the old door the installation was simple to carry out, it just meant having a micro-switch which allowed the door to operate it as it reached its open position. The micro-switch was wired through a photo cell (still fixed above the new door, see in the picture) and then on to the light. The light can be manually switched from three positions too, that part remains as it did. I was sitting at the table having just eaten lunch on Monday afternoon last week when I decided to investigate my options regarding this garage light circuit. I took my toolbox to the garage to work on the problem. Unfortunately it was and still is proving difficult to install the micro-switch on the new door because it is a roller door and there is no easy way for it to operate the switch. It can be done though, nothing is impossible but it could require much work to achieve. There had to be another more simple way I thought. I had thought about having a relay which would operate using the power supplied to the door for it to open and I set about testing that. It worked but unfortunately it also worked when the supply was connected for the door to close. This is because of the type of motor being used. The relay switch would replace the micro-switch had I gotten it to work. It is possible to have a relay operate an external circuit of course and had the manufacturer incorporated one in their control panel it would have made things so easy. I however cannot tinker about with the panel as it would invalidate the guarantee and warranty. So having discovered I couldn’t use a relay in order to reinstate the automatic circuit I am left to continue figuring out how to get the door to operate the micro-switch instead. I had to shelve the idea whilst I think about it.