I know this is going to be a no brainer for a lot of you, But I took off the side frame assembly to grease the gears; I had just gotten my first PA Set. I noticed one sliding pick up on each truck. My friend says there should be a pick up wire on them. They run fine as is and there is no sign of a wire ever being mounted there. Can some one tell me what they are for?????
Thank you for the info, Marty