I am sorry for being so passive here. For about a year I have focused on moduls in accordance with FREMO´s AmericaN standard but now I am picking up the stick again for an ongoing progress.
Today I connected power to the line in order to test functionality before continuing with track. Short circut (naturally) was found in one of the home made turnouts. Once the faulty part was disconected it worked fine, at least as long as the track was powered.