The other day my average miles pergallon stoped working, it just went blank. Every thing esle works fine, I even put another reading in the same spot and that one worked. If I put the amp back in another spot it just goes blank. It's like it's not getting a reading any more. If any body can tell me what is wrong that would be great. Thanks In Advance

 

Contact edge, they have a very good customer support group. Might also need an update.