I have a Walthers Trainline loco which I have fitted a TCS T1 decoder into with LED lights. If this loco is left sitting on the track while other trains are running, it occasionally switches on its headlight and lurches forward an inch or 2 and then goes back to sleep. It does this intermittently while the other trains are running. I have replaced the decoder thinking there may be a fault with it, but the new one does the same thing.
Any ideas?
Any ideas?