Recently my ATV was rolled and it destroyed the gauge cluster. We replaced it with a used from from ebay. The speedo, gears, hours etc all appear to work but the fuel does not.

Right now I am not 100% sure if the issue the fuel sending unit or if there is something wrong with the used Speedo.

I read before that if you unhook the fuel pump wires and ground out the middle pin that it would show full. With it unhooked it would show empty. (I think I have that correct). Anyway when I have mine unhooked there is nothing listed for the fuel. When I ground the middle wire it flashes full but does not show full it flashes.

When it is hooked up the gauge either reads empty (regardless of amount of fuel in the tank) or when driving it will flash just like it does if I ground out the middle wire.

My question to the people here is do you think something is wrong with the sending unit or do you think something is wrong with the speedo gauge cluster? I wish I had another cluster to plug in to test but I do not and I do not want to order another one if the issue isn’t the cluster.

Any help on trouble shooting this would be greatly appreciated.

Thanks,
KJ