led dome lights

hey everyone so i tried looking this up but was unable to come up with anything. so my dome light currently works great but i was hoping to get something a little bit brighter. so i then got an led bulb. when i plug it in it wont turn off, even with the doors shut unlike with the normal bulb. is it possible i need a different bulb, or is this a common issue? its not. big deal if there is no simple solution, I just was to find some ways to ease the strain on my unaltered wiring harness throughout my 76 duster. thanks.