I like the manual switch idea for additional lights. There are lots of photos of google showing where different spotting lights have been installed. Click on the image shown for more info.
RV BACK UP LIGHTSSome of these type of lights might get you in trouble with trailer inspections however. We JEEP GUYS with the OFF-ROAD lights always had run-in's with inspections too...
Having lights on each side mounted to the frame in the rear area is great for me when backing. If you mount them on the rear side then the BACKUP lights rules apply. i.e. they have to come on when you go to reverse... The also have to be DOT approved lights.
nothing is ever easy hehe...
Just my thoughts
Roy Ken