Question Author
gingerbee ///Wouldn't you have noticed if no headlights were on and it was dark///
No, because my journey was on mainly well lit roads and streets and it was rush hour.
When I was stopped in traffic and at lights, I could see my lights shining on the back of the car in front, but didn't know what they were on, i.e side lights dipped etc.
I will have to get someone to stand in front of my car while I try different switches just in case I have to drive at night again.