Well I figured out why my fuel gauge would not work, I couldn't get power out of the new gauge from Evergreen Restoration. I called Jerry when I couldn't figure out thr gauge sender deal then he reminds me the left battery negative terminal goes to the starter solenoid then I look at the JD service manual and it says the same, but my oh negative wire was hooked up to the post on the side of the starter and the rh positive cable feed the starter solenoid and it's been this way as long as I've had this tractor. I switched the 2 cables and low and behold the fuel gauge works and I start it up and even my charging system is charging . So thus far this 24 volt JD 4020 has survived.