Good afternoon. I have a query about colour light signals, my 00 Gauge railway is analogue, rather than digital & I use an H&M Old Duette Controller that I have acquired and a more modern H&M 2000 controller. I have an older hornby colour light signal that works well, plus I recently bought two gaugemaster 2 aspect colour light signals, I think these 2 are LEDs rather than normal bulbs and also included a wired in resistor and double pole switches. All of these work well and are bright when turned on. A friend of mine just gave me some very old ECKON Colour signal lights than he has not used, they have a price of £ 1.76 on the box so would not be LEDs. However they do include a resistor and on the instructions - diagram, it shows the Resistor must be placed in the live, + lead, before any switches and bulbs etc. They say this should be on a 12 volt output, which I am sure my controllers are. However when I just rigged up a quick test circuit and tried these lamps out, they did all work, but were really dim, compared with my other lights. I did try it without the resistor and it was nice and bright, similar to my other signal lights. The instructions clearly say that the Resistor supplied must be used and do not operated the bulbs direct from a 12 volt power supply. I am wondering why they included the resistor on these older lamps. They also say that using an unresisted on 12 volts will distort the signal head, which I don't really understand. Does anyone have any suggestions or ideas that would enable me to use these lamps in an Un-Dim way? Many thanks.