johntucker -- think the hardest part of this operation is going to be coming up with a way for the cigarette lighter to serve as a switch -- you might want to consider using an intensive wiper switch for this --
https://www.pelicanparts.com/cgi-bin/ksearch/pel_search_2016.cgi?command=DWsearch&make=POR&LastVisited_input=911M&description=91161331901 (or headlight washer switch --
https://www.pelicanparts.com/More_Info/91161331901.htm?pn=911-613-319-01-OEM&utm_source=googleppc&utm_term=91161331901&utm_campaign=Shopping+Feed&gclid=EAIaIQobChMIuv7WzbrK6QIVksDACh2JPAQ6EAQYAiAB EgLAafD_BwE)
these each have the right mechanism, pushing it causes the circuit to complete and releasing it causes the circuit to open -- and they can each be installed into cutouts that have already been made in your dashboard (you'd simply need to cut the vinyl covering to access the cutout).
Thx for reminding me of this
