I have an 06 FXDWG and I installed the HD speedo/tach/fuel gauge. Did not feel the need to have 2 fuel gauges, so I removed the stock gas gauge and replaced it with a dummy cap. Problem is that the low fuel light is constantly on now that the stock fuel gauge has been disconnected. In doing some research I read that you actually need the original one operational for the one in the new tach/speedo to function. You will need to take apart the original cap, wrapped the remaining functional part in tape and put it in the hole below the dummy cap. This way the fuel gauge in the speedo remains functional.
Good Luck!
3 апр 2020