The light for my odometer and OBC display stays on after I turn off the ignition. The dome light does not come on when I pull on the driver door handle after locking up the car.

If I remove the unloader relay in the fuse compartment, the lights for the odometer display and OBC display goes off and when I pull on the door handle the dome light comes on.

Do I have a bad unloader relay? What is the purpose of the unloader relay?

Also do anyone have a supplier for the light bulbs for the third brake light for a 1993 e34 525I Touring? I was able to take apart the brake light but all the bulbs are solder to a circuit board. I went to radio shack and several auto parts stores, but no one carries the 12v 1.2 watt bulbs.

Thanks in advance