I've uploaded a running video to YouTube. I tried making a pantograph spark myself. Please search for the above and take a look. [Product Name] N Gauge Model Train Pantograph Spark Lighting Kit LED Self-Made Interior Light (White) Power Feeding Type Spark Color: Ice Blue Set of 2 [About Pantograph Spark] The lighting pattern is written into a microcontroller. It is converted to 12V and wired to the LED self-made interior light to operate in the forward and reverse directions. [Please Read Carefully] ① Operation is confirmed before shipping. ② We try to ship as soon as possible. ③ Defective products will be replaced with good ones. ④ Please rate the product as soon as you receive it. ⑤ This product requires processing to make a hole of about 1mm in the N gauge vehicle. Please perform the processing at your own risk. An installation manual will also be enclosed. [Items separately required for installation] Pin vise hand drill (1mm) Tweezers Double-sided tape Masking tape Resin UV adhesive [Specifications] Lights up in both forward and reverse directions Voltage: 12V Spark color: Ice blue Spark board dimensions: 11mm x 30mm Tape LED length: 10 cm Interior light: White