eBay rip off alert
In the pics attached you will see a circuit assembly being sold on eBay for about $10 it consists of a bridge rectifier a electrolytic capacitor and a voltage regulator circuit board If your are interested in this and would like several of them for lighting in your cars and locos etc you can purchase the parts on eBay for about $3 I found the voltage regulator boards on eBay in the electronics category i bought 20 pieces for $19 with free shipping, I bought the bridge rectifiers 10 pieces for $4 and the capacitors again on eBay in the electronics category 5 pieces for about $3 both with free shipping. There is also a seller on eBay selling the exact same voltage regulator board for about $7 each. To save a few bucks of your modeling dollars on eBay all it takes is a little looking in other categories