The panel my switch and ammeter mounts in has an extra hole . See photo. I never see a panel advertised for sale without the switch. I have the key for my switch so I would like to reuse the switch. I'm not sure if it would be a good idea to weld a plug in the hole, or use some epoxy.If welding I suppose the switch and gauge should be removed first. It appears the switch twists a bit then pulls out. Correct?
That hole probably was put there by a prior owner to hold a dash light:
If you really want the hole gone, you could cut a circular piece of steel to fill the hole and Mig or Tig weld it in, then grind the welds and give it a skim coat of filler, then repaint.
Or, you can look on Ebay for another instrument panel, they come up frequently. Many times the switch is trashed and the panel is missing the ammeter, but you don't care, all you need is the panel, you can swap your switch and ammeter over to the replacement panel.
Or, the vendors sell the entire panel if you want to go all new:
The switch housing is riveted to that panel. That's the reason most come with a switch or at least the housing. If you got a used panel without the switch, you have to swap your switch's innards to the housing. Also note that there are two types of housings. One that uses tabs and one that uses pins to hold the switch components in the housing. The housing would need to match your switch components.
OR, you could mount a dash light in the hole!
Tommy, you could solder a brass patch panel fro behind and use your body filler of choice over the repair. Soldering will not require any ds-assembly of the panel, as the heat will be no problem.
Hope this helps.
Allan from down under.
Small battery clock
Black Duck tape
Do what you have to do! David's suggestion is good, but if you don't like the hole, find another switch panel plate. A word of advice though, if you choose to mount your switch parts to another panel, pay close attention to the diameter of the semi-tubular rivets. The heads are larger now days, and they must be re-contoured so they will look the same. If it were me, I'd just look for another switch plate assy.
I think Mark is right and I think that's your best bet for a period correct "repair". Not sure about soldering but perhaps a piece of tin or galvanized metal JB Welded to the back of the plate just covering the hole would give you a solid backing for body filler & a re-paint.
I decided to do a quick fix, for now anyway. I installed a push button switch from NAPA for my horn. Later, I might find another panel and buy the right horn button.