The pics below: there's a 'before' and 'now' pic of the wedgehead. I took the front panel right off and made a new one from plywood I got at Bunnings. There's also a pic of the 0-9 disc with the new rivets added, and the wiper with the additional snow-shoe wiper added to that.
...... I did encounter a few problems when I was re-wiring the disc. The original disc is an arch shape, and is a 4" disc. The disc I used is circular and is a 3" disc. The problem is that with the arch style, there's room for some wires to be sent to the outside of the disc and not touch any rivets on the actual circle of rivets. I first thought that these rivets which were not part of the circle all connected to the rivets on the circle/s. Most do, but not all, as I found out when I began the re-wire. The solution to this was to just solder one end of these wires where they should be, and then just let them 'fall' below the level of all the connectors on the outside of the circle. I can either solder them straight to the incoming wire/s, or add a small bracket with connectors on it and solder these wires to that, and then join with the incoming wires. ... I'll leave it a while and see.
Now that I see how to do this job, I may start again if I can find an arch and wiper that are the same size (4" on original). The main thing for the disc is that it should have as many rivets on the two outside circles as possible. ( I can rivet in the 5 rivets on the small circumference within the two main 'circles'. The main thing for thw wiper is that it should have 3 pairs of wipers, spaced at 120 degree intervals. If anyone has such an arch/wiper I'd like to buy it. Then I'll have another go at 0-9 mods. It will work as I have done it at the moment, but I'm not too thrilled about running some wires straight off the back of the 0-9 unit, to the incoming wire/s. I'd also rather not 'add' any bracket etc to make these wires 'stable' and hard wired to any bracket I may come up with.
The main thing is that I've managed to make the 0-9 unit behave in exactly the same way as the original, with exactly the same wiring configuration. ...It took me two days and one night to complete the mods on the 0-9 unit. ...I always go slowly, ... especially when it's a 'first time' type repair, as in this case.
Now I can begin the re-wire of the head. ... looking for a wiring harness off of any electro-mechanical machine. Is there one out there? ... Cheers, Mark
