Walterjn as far as I can tell, there is no run tow switch. Just the F-N-R switch
What year and model is it? If it is a PDS raise the seat and look for a sticker on the cross member frame. The run/tow if there is under the seat on a black control box on the right side. There should also be a stamp on the battery posts that will show how old they are, e.g. B8 which would mean Feb. 2018.