F: Frame Miller Early H.R.D. Stop Light Switch Mounting Bracket

[HRD hound]

I am sharing my design, not saying it is exact! Just a suggestion. I have been looking for the proper shape/design of the Round Miller early stop light switch mounting
bracket. I have looked at several pictures of early bikes, original and restored. I found it difficult to determine exact design, as view is blocked by the switch. So here is what I came up with. 3/4" by 1/8" aluminum flat bar Approximately 2 3/8" long (I made it a bit longer as my bike had a rear fender brace added, and I felt switch bracket would have to be tilted a bit forward to clear brace) I also added two washers for spacing bracket out slightly to clear the round area of the added fender brace ( See rough diagram, and pictures)

 

[passenger0_0]

Thanks for sharing these photos and drawing. I've got a switch but no bracket.
Can anyone confirm these bracket dimensions?

 

[HRD hound]

I think the original may have been a bit shorter, as I had to tilt mine to the right to get by the added fender stay. Here are some photos I have taken, the first three are of #7 bike, but it seems to have had an extra fender stay added like my bike. In the photos you will see the switch is rotated to the rear, and the bracket that sems to be the thickness of mine looks like it has a curve. I do not think the bracket is the original shape as the curve would not be necessary. Other photos seem to place the switch between the rear stay and the swing arm.
The fourth photo shows Switch added to the extra stay, which I think is the correct position for the switch, but not the correct mounting (because stay was added).
The last phot is of a nicely restored bike, it seems the switch is a reproduction, but I think it is in the right location. Did not get good picture of mounting bracket.
Other original bike photos, not close ups, show the switch between rear stay and Swing arm.