Hi Les and Kevin, Les I think it is very prudent the way you have connected the maintainer coil and I think I would have done it in much the same way, because although the new switch can handle the electrics, I don't think the new switch is physically robust enough for the constant use that the lever would put on it and it may not stand the starting load for very long when used in the same manner as the original one.
I have purchased the other switch that Ketan showed in his photos, it is pre linked the same, although the switch on mine is still working, my machine is getting on a bit and now I have a replacement if it should fail.
As far as mounting the new switch, it would be possible to mount a box to hold the switch and the NVR, where the lever is fitted, but due to the length of the switch it will be a bit sticky out. I think it would be better to fit it in the original hole and make a plate for the new switch big enough to pick up the bolt holes that held the lever in place, but then Kevin would probably have to mount his NVR in a suitable box and mount it in an appropriate place. He may be able to fix the box somewhere close to the new switch, but will have to be a choosey where to drill new holes for fixing it.
Regards Nick.