Originally Posted by thetanu539
Ok so I was able to get under the TT today and all of the wires are connected and seem to be in good shape. I also filled it up and drove it around about 30 miles. Seems to always show 1/3 even when tank is 100% empty.
You can test the panel by removing the cover and removing the grey wire that comes from the grey tank and swapping it with one of the other tanks' wires. If it still shows 1/3 and on the grey indicator it could be the panel circuit board.