I installed a roof light bar and connected it to an OEM style switch from CH4x4, but the little image on the switch is lit even when the vehicle is off. I purchased a fuse tap to write into the switch so it turns off with the vehicle, and wonder which fuse others have tapped into? It seems unlikely but the mechanic told me the draw from the light bar killed m 1.5 year old battery recently so it would be great to resolve. Thanks!