Ive just got an auto dimming mirror and loom from my local scrapyard. Went out and fitted it but the indirect lighting is not working and when I flashed a torch into the sensor nothing happened to the mirror. I have seen in a previous post that fuse 27 in the boot was for this, checked it and the fuse is in place and I also tried swapping it with another 5amp fuse. Is there anything I have missed? Does it need Tech2'd?

Any help will be most appreciated

Raymond