The will only work one way tough as the polarity effects them.
2K215 - 2 x 5 x 15mm 12v 1.8w Screw In Bulbs found in Hornby, Triang Dublo Locos
2K215 -4 x 5mm x 15mm 12v 1.8w Screw In Bulbs found in Hornby,Triang Dublo Locos
2K215 -8 x 5mm x 15mm 12v 1.8w Screw In Bulbs found in Hornby,Triang,Dublo Locos
25 pcs OO HO gauge Model Lampposts 12V bulbs made Metal Street Lights Black #045
