marker display, for helpers

[Anonymous]

David--

I consulted my copies of the "Consolidated Code of Operating Rules" to see if I could pin down some date information for you. Rule 19 of the 1967 edition of the Code required red markers to be shown to the rear on all trains. The next (and final) edition of the Code, published in 1980, had a new "exception'' printed with Rule 19: "When light engine [i.e., engine without cars] is operated as a train or when helper engine is on rear of train, headlight must be displayed on dim to the rear to serve as marker."

1961-era diesels had built-in classification lights which could display white, green or red indications, so your red LED installation will be right on the money.

--John