Rail king block signal 30-11005 wiring to a itad

Is this how you have it hooked up?

Yes but only getting the red leds’s. So strange

Just noticed that the switch on your in the picture is forward mine is back. Set on track power

If you're powering itad from track power then set toggle switch to track power. Photo only meant to show connections to signal. Disconnect red and green wires from itad. Leave black connected. Momentarily touch red wire to center rail. Does red turn on? Do same for green wire. Does green turn on?

Ok I have two of the same signals, one works and one only shows red. So yes now the one shows all three colors in sequence. Then the other just stays red. Bummer but I will just use the one that stays red on a side track for parked cars. Thank you very much!! Have a good night.

I think it might just be a loose wire in the defective signal.  If you are willing to remove the bottom plate under the signal to expose the base, I'm hoping you might see a loose green wire connection to a circuit board which should be an easy repair (albeit requiring a soldering iron).  I realize the price-point of these signals is such that it's not economical to get it "professionally" repaired.

I will check tomorrow stay tuned!!

I did open it up and take a look, it looked like someone already did try to take it apart and do some kindle of repair. I bought it off eBay used so damm eBay got me again when will I ever learn. I always thought that these things were more durable. But with any electronic buyer beware!!

I feel your pain!   I realize the closest exit and your course of action is to just live with it.

That said, if you find yourself with nothing better to do on a rainy day, let "us" know and I for one will be willing to guide you thru how to repair it.  It would require a digital multimeter, soldering, and a maybe one or two inexpensive (10 cent, 25 cent) components - shipping costs will be the showstopper unless the local Radio Shack makes a comeback!

For example, here's a similar thread with dark LEDs on the 30-11005.  The schematic for the MTH 3-aspect "timed-yellow" circuit has been published here on OGR (copied below):

You know I will take you up on your offer, in a couple of weeks I will set aside some time to repair it. That is why I got into hobbies to run, repair, give back to its community and to have fun!! Thank you

Be sure to buy extra film for your camera... picture being worth a thousand words and such.