Some E30s, E28s and E23s had an interior rear-view mirror with integrated map lights. BMW p/n 51161906525, which is NLA but I picked one up from an E30 part-out. You run power up the A pillar and along the headliner to the mirror, and the base is the same as the E12s.
It's more convenient than the side-mounted courtesy light, especially for the passenger.
Map Lights
Map Lights
(oo=00=oo) Eric
1981 528i Manual
1981 528i Manual
Re: Map Lights
Ive been keeping my eye out for one of these for some time now. Let me know if you see another one float by.