I have a 2009 Suzuki Swift 1.3 GL. I am getting my car MOT'd at the weekend and was checking all the lights in preparation for it. I noticed that when I pressed my foot on the brake that the brake light on top of the back window lit up but no other lights lit up. All my tail lights work but only the light on top of my back window works when the brake is applied. Is that light the only light that shines when the brake is applied or should my red tail lights also be shining when the brake is applied? Sorry if this sounds like a stupid question. Many thanks for any help in advance.