Ammeter to Voltmeter...who does it?

Logan said
I would suggest connecting the two heavy ga wires that went to the old Mopar amp guage together, connect a light ga wire to this same joint, connect the wire to the hot side of the newly configured guage and a second wire from the other side of the guage to ground. It is now a volt meter.

Sorry to dig out this old post, but I'm a noob in electricity.
I want to convert my ammeter into a voltmeter but I don't really know the best way to connect it.

If I translate correctly the quoted post above, is it a good diagram and a safe connection?

:thankyou:

François