Im going to be putting an amp in my Yamaha Rhino atv's roof. I would like ot runs a small led dome light also. Would it hurt anything to connect the pos and neg from the light to the amp? Would put a switch inline of the pos cable to turn it off. Just dont wanna run another power wire if I dont have to. How much power would th elight pull and would it cause a spike or any porblems when running both?