Doing a little test fitting. I don't think I'm going to go with the hinged design after all as after looking at the stock setup I can't flush mount a plate behind the dash without cutting and I don't want to do that. So instead I will paint a plate and surface mount. And then slot the plate so that an unmodified radio delete plate tangs will fit in the slots and fit over the gauges.
View attachment 1118212
Mike, if it helps...
I used a piece of 1" steel, 1/8" thick, long enough to span the radio hole, top to bottom. I rounded all four corners, to make it easier to turn.
I drilled a hole in the faceplate of the two-gauge mount, that I made (see photo below), and in matching spot in the 1" steel plate.
Then placed the bolt thru the faceplate, thru the 1" steel plate, added the lock washer and started the nut.
Then I placed the faceplate in the proper place and reached under the dash and spun the 1" steel plate, vertically and tightened the nut.
It stays in place, doesn't rattle, is easy to remove, as needed, and no holes drilled in the dash.
Not the best picture, but you can get an idea what I described.
For your gauges, you could add a 1/16" aluminum, large enough to cover the radio hole. Cut whatever is needed to allow you to mount your gauges to it.
Mount the gauges to this aluminum.
If you need this part:
- Cut and fashion more 1/16" aluminum into a sort of shallow 5-sided box, that is deep enough to cover the new gauges.
- Mount this box to the aluminum piece, using an acrylic piano hinge, at the bottom.
OR just mount a new faceplate to the aluminum piece, using an acrylic piano hinge, at the bottom.
Mount the whole thing to the dash, using the method I used for mine... The box or new faceplate would flip down to see the gauges.
Hope you can visualize this... I can no longer recall your intent... HTH