The lower half of the nose piece has two square openings. To my knowledge only the special trans-yellow "Y" will fit into these square openings and allow a single bulb to illuminate the right and left side simultaneously. If you increase the spacing (...) (25 years ago, 23-Feb-00, to lugnet.trains)
Ah. (...) Right. Make that square opening thing into a separate brick. If you widen the nose you can leave it centered. (25 years ago, 23-Feb-00, to lugnet.trains)