Sub tank lights Huh, I thought I was going mad. Our subtank light sometimes comes on when we are fully fuelled and going round corners. And when you use the spotties, the main fuel gauge drops fairly dramatically. But once you turn the car off and turn all back on minus the spotties, Fuel gauge reads correct. I have learnt to live with it, but will tell hubby about the previous post of cleaning the earth wire thou. We seem to think whoever wired in the spotties may have picked the wire for the fuel gauge and they take the power when we use spotties which is not often. cheers rellbell