Bought a used 2015 Sportsman 570sp. Speedo is blinking empty but tank is full. I pulled out fuel pump assembly. I put my meter on it and got 6 ohms when up and 90 ohms when down and put halfway and read 50 ohms, which it supposed to read. Voltage was at 2.5 volts which I think is low. While assembly out I pulled up on float, it would read empty until I pulled all the way up and it read full but would not go anywhere in between even when I lowered it all the way, I then shut off ignition and then it would read empty. Resistance checked also at where plug in to top of assembly and was good. Is this a speedo issue since resistance seems right, but I do not have 5 vdc? Thanks in advance!