I’ve just got car back from having a new floofloor fitted and various parts welded and and the Speedo and fuel gauge doesn’t wwork anybody got any suggestions what could be wrong .the fuel gauge goes right to the top .
That suggests that either the cable from the tank to the gauge isn’t connected at one end or the other; or that the tank isn’t earthed. There isn’t an earth cable for this and it relies on metal to metal contact between the tank and body. Running a dedicated earth lead often works.
I had a look at the car this morning and the speedo cable had come off the back of the speedo head, I fixed that back on and the fuel gauge started to work so it seems like its been an earth problem to me so thank you for your advice I can sleep better to night.