On Cajon Pass locomotive ES44C4 the rear headlight does not work on the 3rd locomotive in "Z-ELPSDG6-05 Intermodal El Paso to San Diego". I've verified that the headlight switches are all set correctly on all 3 locos (short hood lead - single - long hood trail). I'm on PS5.
I'm a little confused here. If this is a tripleheader consist, you wouldn't turn on any lights except on the lead. If it's 2+1 top-and-tail, MU light controls don't affect the engine at the rear.