Quote Originally Posted by NTFDAY View Post
Not knowing what sort of wiring you have I'll make the answer general. You can remove the amp gauge and splice the two wires together as the gauge is in series with the charging system. The volt meter on the other hand is a tap of of the primary buss feed. The positive wire to the right post as you are looking at the back of the gauge and the left post to ground.

I agree with this answer. I don't like ammeters, too much current passing through the wires connected to them that can cause serious heat if they short out. There is a reason the majority of newer cars have voltmeters, much safer and better info.

Here is a good explanation and drawing:

http://www.houlihane.co.uk/amps.htm

And another one....

http://www.autometer.com/download_instruction/642d.pdf


Don