Best FRED circuit ever! is a free Model Railroad Discussion Forum and photo gallery. We cover all scales and sizes of model railroads. Whether you're a master model railroader or just getting started, you'll find something of interest here.


A while back I figured out a FRED circuit that nails the FRED flash rate perfectly. It also helps that it's super easy to make and install in HO scale models. Here are some graphics that show it installed in a ATSF roadrailer (actually, a Autorailer). I wasn't sure if the FRED was still available, but it appears that it's available from the Sunrise website

For some reason Walthers didn't list it in their catalog.


Coal Shoveler
I've got 3 of those, one is operational on a well car. It's pretty slick, and the flash rate seems right on.

I put it on my DCC layout, and it started flashing immediately....



Diesel Detail Freak
So you're saying, add an LED so that the flash rate slows? I've been eyeing up the Ring Eng. ones, because they look a little more modern.

bnsf sammy

The Ringengineering FREDs I think are excellent. They look prototypical, and are not powered by batteries but from the track power.So on DCC, where the track is constantly powered, the FRED operates even when the train is stopped. I think the only downside is the price, $40 seems like a lot for a FRED.


Put down my Brass!!!
funnelfan, I really dig your diagram, and info. It is amazingly usefull, seeing as the price for everything may be a little cheaper. I know the FRED from Sunrise id about 15.98, at least it is where I work, But i never would have thought of this, so Thank You for your help. :)



Coal Shoveler
Basically, the RIng Engineering one is the FRED itself, plus a wafer-thin circuit board that fits between the truck frames, over the axles. It's well-hidden once installed. There's a tube that fits over the axles which attaches to the circuit board; the wheelset is pretty much attached permanently to the circuit board. I think they said they use P2K trucks and wheelsets.

When I got mine, they only offered the 36" wheel version. Now they have the 33" wheel version, for smaller freight cars.



After viewing the Ring Eng FRED at the club I decided to get 3 so I can use 3 different cars on the end of the train.:D .

Affiliate Disclosure: We may receive a commision from some of the links and ads shown on this website (Learn More Here) is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section. - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.