amp gauge

Hey guys I have an amps gauge in my shop type battery tester that someone has replaced an I don't think it's wired up correctly!! How would you wire that gauge? Only has 2 terminals on the back of the gauge, 1 marked + and the other 1 marked - I know it's not + and - like in a volts gauge..I use to be confused but now I'm not so sure:)

added some pics I use to be confused but now I'm not so sure:)

Thanks 4 answering my post but i'm just on my way out, so I will get back to you later today thanks againI use to be confused but now I'm not so sure:)

i am an idiot wrote: Why do you think it was improperly connected? Was it pegged out for a while and now it is stuck in the position on the picture? There is a positive and negative connection on the meter, but it is to be connected across a shunt and probably is to have a resistor run in series with it. A shunt is going to be a short metal rod probably smaller than the wires that connect to it. Do you see this on your charger?

Thanks again I.A.A.I. Yes it was pegged out and the needle still moves The shunt I have a look for it. There is a resistor inside the gauge connected between both terminals... border="0"> <a href="http://photobucket.com" target="_blank"><img src="https://i179.photobucket.com/albums/w295/mag63/Picture002-2.jpg" alt="Photo Sharing and Video Hosting at Photobucket"></a> OK the fat 2 red cables with the eyelets was connected on each of the terminals on the gauge. There is a black cable on the top (with white writing) that has an eyelet on it and that 1 had been taped up and pushed to the bottom of the case out the way.. Are the pics good enough for you to see what I'm telling you about??I use to be confused but now I'm not so sure:)

And this pic I use to be confused but now I'm not so sure:)

i am an idiot wrote: Looks like the old meter may have had the shunt mounted to it. Was there a metal rod or a metal bar mounted to the back of it?

Thanks, No didn't have any thing on the back of the new gauge, I might ask the old owner if he still has the old amps gauge still?? If not what would you suggest next? I use to be confused but now I'm not so sure:)

mag63 wrote: i am an idiot wrote: Looks like the old meter may have had the shunt mounted to it. Was there a metal rod or a metal bar mounted to the back of it? Thanks, No didn't have any thing on the back of the new gauge, I might ask the old owner if he still has the old amps gauge still?? If not what would you suggest next?

But thinking about that even if he still had the shut it would be no good 4 this gauge as the internal resistance would be different... I could make 1 from copper wire of the right gauge and spiral wind it to make it neat and to shrink the size of it as the straight wire would be 2-3ft long I use to be confused but now I'm not so sure:)