You might want to invest in a illuminated switch for a reminder that you have them on .. On all my Aux eq. I have ''dummy'' lights and they have saved the battery more than once. You can even go one step further and wire it so that if the light goes out your switch will not illuminate.
Thanks for the good ideas
my theory in having them be yellow ditch lights is that it should hopefully be obvious that they are on - being yellow.
we shall see. :-)