adam i have 2 cars from the royal blue set,they both run the lights from a 9 volt battery and they worked before.when i moved few yrs ago,i put them in the garage on a metal stand.i got them out few days ago,put in a fresh battery,turn the switch on and nothing happen.i did just found out that when i sent the switch in a certain spot,the lights comes on,but only one comes on,not the other in both cars.so right now i just one light from the cars,the back light also comes on,but only one light inside.i think both swiches has some kind of short in them.like i said,if i set the swiches at a certain spot,they work