RailPro > RailPro Specific Help & Discussion

Older Bachman Not DCC Ready Steam Locomotives

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drisdon:
I found a Bachman Spectrum 2-8-0 which is DCC ready which I'm planning to install Railpro into. Obviously the iPhone 4s speaker would easily fit but there's more room for a larger speaker in it, so plan to do a 28mm round one. Anyways, when I hardwire the module in do I need to put a resistor in line with the headlight?

I believe my son will love this...being able to hear the sounds, shoot I might even like steam.
Thanks,

Alan:
If the existing wiring has a resistor in the headlamp circuit then retain that resistor in your wiring. If there is no resistor and the headlight is an incandescent bulb then no resistor required. If the headlight is a LED then a resistor is required. 1k ohm 1/4W is a popular value.

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