Head lights come on all by them selves (05 Tacoma)

When the truck is parked and all is turned off, keys out of the ignition, doors locked. The head lights will come on all by them selves.

This truck is new to me so I do not know what modifications have been made.

Ideas???

Bellebuoy

 

I had the same problem with my recently purchased 07. Mine was a US truck with a daylight running light modual installed from Canadian Tire. Replaced the modual twice but the lights still kept coming on due to defective moduals. Finally just disconected the modual and leave the lights turned on. When the ignition is turned off and door opened lights go out. Only difference is that all my lights are on when running ie:headlights, tail lights and side lights vs just headlights