After the recent posts discussing the C1 horn adapter reproduction I was lucky to find my original adapter and horn button. I had purchased the repro parts including the 'brush' but could not get the horn to work. I assembled the unit to include the old adapter and new 'brush' and no horn. The tag sticking down from the adapter sits just above the plastic housing of the brush, but cannot touch the metal of the 'brush'. It seems to me that the tang and the 'brush' should come in contact when the horn button is pressed, am I correct? The horns do sound when I use a screwdriver to short from the hub to the bearing. Is there a good schematic of this assembly? The AIM I have shows the general assy but no detail of the adapter and 'brush'.