last site update 15thNovember2018

view our privacy policy

Shopping Basket

About YouChoos
YouChoos British Sounds
Sound Decoders (blank)
Standard Decoders
Function & Accessory Decoders
Lamps & Lighting
Seuthe Smoke
Electronics & Connectors
Tools, Glues & Adhesives
Ready-To-Run Models
DCC Systems, Feedback Modules & Programmers
Install Guides
Quick Helps
Technical Resources
CT Documentation
Build your own sounds for CT
How to Order
Fitting Services
What's New?
Customer Feedback
Useful Links
YouChoos Quick Helps

Quick Help - Connecting Lights

Lighting circuits are very simple with a DCC decoder. In principle you just need to connect a bulb or LED to the decoder's BLUE (common positive) wire via a protecting resistor, and the -VE leg of the light to one of the decoder's AUX/FA function outputs.

In fact, the hardest aspect of fitting lighting to a model is finding routes for the wires to go!

Bulbs are unusual these days, and it is suggested that you always used LEDs where possible - they produce less heat and will last a very long time.

LEDs always need to be protected by a resistor. Most LEDs are between 1.5V and 5V, and the decoder drives AUX outputs normally around 12V, so protection is essential. Forgetting to added a resistor will not normally cause damage to the decoder, but the LED is likely to go 'pop' instantly.

Every 'group' of LEDs should have its' own resistor, and where possible a resistor for each individual LED is a good idea. By 'group' we mean any group of LEDs that will be operated together e.g. both front white head lights. If a light is going to be controlled from a different Function Key then it will need its' own resistor, otherwise switching it on with cause the other lights that share the resistor to dim - not a great effect!

A bit of YouChoos poster art for your enjoyment!