What I have is an overhead electric line which stops at a large station and does not start again til way up the line, so I attach a diesel to the front and the Panto loco becomes dead in tow til it reaches the overhead system again where the diesel then uncouples and the panto goes on its way. What I'm trying to do is lower the Pantograph when its being " towed " by the diesel but I cannot do this when in AI mode
PJ
La France en Train have a set of controls that will do what you want
one instruct them to lower and another to lift them up
they are like signals that attch to the side of the track
I got them free when I bought TRS2008 , not sure if they are avalable free on the site there is a lot that is
there are also some free route moduls , mabe one of them has it installed
look for a module with "Sec" or "Section" in the heading