I have a PSD air/fuel ratio gauge, but it's almost impossible to read it in the day time as it's too dim. At night time it's fine, though. At the back, there looks like a hole for a light bulb, so I was going to pop one in and see if that helps things out a bit. Does anyone have one of these and do you know what type of bulb/fitting is required to fit the hole. Also, if any of you use one of these, did this sort the brightness issues?
Thanks!