I have done some research, but have not found anything. I have a 1970 rallye dash, and would like to replace the ammeter with a voltmeter. Has this been done before, and if so, what was done to accomplish this?

Thanks

I do not know about a rally dash.
what people did was find a similar size sun meter volt meter and disassembled the gauge.

depending on how close you want it to look, some took apart the old one and used that face plate on the sweep portion of the sun meter gauge so it would still look the same.

others found a place that could replicate the font and repainted/stickered over the old so it showed correct voltage with the old gauge face but new gauge guts.

you would have to see, and I am guess a more rounded sweep, might be an issue.

I would prefer to have numbers instead of the OEM faceplate. Is this something that can be done on a printer?

I did find a picture of this being done on a standard gauge cluster, but nothing on a Rallye dash.

Redline Gauges can convert the ammeter to voltage.

http://oldschool.mrheaterbox.com/premiumdashdecals.com/do_it_yourself.htm
This place sells decals. You might see if they can print one.

Thanks. However, I have researched the Redline thing and it seems quite expensive.

This may give you some ideas:

https://forum.e-bodies.org/interior/6/voltage-gauge-for-cuda-rallye-dash/685/

Very good, sir. Thank you!

Anyone have any idea if this will work? It's a 1.5 inch Auto Gage voltmeter that I already have.

you would have to measure the posts on the back and see if they are the same distance.
I think the post I Read about it, mentioned insulation being an issue.
The old posts fit through something that insulated and the new ones were short.
I don't remember what he finally insulated it with.

OK thanks