01 tacoma headlights not turning off

I recently ran into a problem with my head lights, they will not turn off after I shut the lights and shut off the truck. Last night I guess they were still on and when I went out there this morning it was making a clicking noise and.... oh yea, the battery was dead. I thought that there was an auto shutoff that would turn them off after a certian amount of time, but even still, I turned them off manually. The only way to get them to go out is to cycle the brights a few times. Does anyone know how to fix this. thanks