I tried setting my Smart Craft fuel gauge this weekend and it still shows 0 gallons. I had used the method of starting with an empty tank filling up 25% then hitting set then put in another 25% of the fuel and so on until the take was full and this worked fine. I had to change out my starting battery and lost the settings. I decided to use the default method as I have a 2005 Cougar and the two tanks are the same size and a regular shape. When I tried this I set the number of gallons to 26.0 and hit the option to use the default setting. The gauge reads 0 gallons on both tanks. Whats up? Are my sending units bad or is there a step Im missing? I followed the instructions in the Smart Craft manual. Last edited by Jeff W from TX on April 9th, 2013, 2:09 am, edited 1 time in total.