@RoyBoy posted:That certainly does not look like factory work to me.
I just realized that you did not say the loco was purchased new. Some previous owner did that, most likely.
No, Roy, It is definitely factory work - the engines were purchased new from Nicholas Smith. All three (AA & B) have identical lights. In addition, I also purchased a LIRR FA Cab car from Charles Ro which has the identical LED.