too much voltage with TMCC?

You can get 18 volt bulbs for those, but if they're difficult to find, I'd get the OEM replacements and just wire a silicon diode in series with the pickup to drop the voltage to the bulbs.

Or wire the bulbs in series.

Thanks a lot.  Any chance Radio Shack carries them?

Town and Country Hobbies are your best bet for 18 Volt replacement bulbs

stores.towncountryhobbies.com

Radio shack has the diodes, any 1N4001 through 1N4006 diode will work fine for this task.

As long as there's an even number of bulbs.

I would convert to LEDs,they should not need replacement. Shown here

www.jcstudiosinc.com/BlogShowThread?id=487

Dale H

And there's certainly another plan.

screw-in 18v LED's here E10 base

You don't HAVE to run the voltage at the full 18 volts on the track. Most TMCC trains will run just fine at 10 or 11 volts and that will save the bulbs.

You will probably have diminished smoke from a steam engine.

Roy, he is using bricks, you cannot vary the power unless they are hooked up t a ZW or something like an accessory controller

I don't think many of my TMCC or Legacy locomotives will open electrocouplers on anything less than 15-16 volts.