Re: Ken's 1937 120 Touring Sedan

Posted by HH56 On 2015/11/22 13:12:08

I don't know of any way you could safely calibrate the ammeter at home without having the proper tools and expertise. They are delicate mechanisms and can be damaged easily so really needs to be done at an instrument shop. I would ask a question though. What does it do when the engine is off and radio or headlights are on. If it still reads discharge then ammeter has an issue but if it now reads to the charge side then the wires connecting to the ammeter are reversed on the two terminals. Reversing wires is done when the polarity is changed. Is yours still a positive ground?