Carefully thread the fine wires into the hole, then insert the lamp mounting tube. The longer of the 2 wires is the + lead. Alternatively, if a different level is wanted, you may also use any other value 1/4 watt resistor as long as it is larger than 1k Ohms.
Layout Concepts (DCC Concepts) LML-GSBN Legacy Models Gas Street/Platform Lam are ideal for modelers looking to recreate older railroad layouts.