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 DIY Interior Light (White) Power Feed Type Spark Color: White Set of 2 [About Pantograph Spark] The lighting pattern is programmed into a microcontroller. This is converted to 12V and wired to the LED DIY interior lights to operate in the forward and reverse directions. [Please Read Carefully] ① Operation is confirmed before shipping. ② We strive for prompt shipping. ③ Defective products will be replaced with good ones. ④ Please provide an evaluation as soon as you receive the product. 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 is also included. [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: White Spark board dimensions: 11mm x 30mm Tape LED length: 10cm Interior light: White