Selecting thread for visors

[dmjlambert]

I posted on somebody else's thread the question and then realized I should have just made a thread about the my subject. My subject is thread. I would like to sew the visors on my truck, all that is wrong with them is the thread deteriorated and they popped open. Can anybody tell what size thread the factory used to sew the visors? I understand thread comes in TEX sizes, and there are many thicknesses. I would like to get the right one. I have saddle interior, so looking for some light brown thread that would be suitable, and needle and thimble.