So I just discovered that my 13-button OBC sorta works after I replace my SI batteries (although neither tach nor econometer work, still...). The buttons light up great, and the LED bar works well enough to somewhat see, but is really dim. Does the entire LED bar need to be replaced, or is it backlit with bulbs? Also, it is normal for the OBC to remain on after ignition is off? Even with the key out, I can use the OBC just like when the engine's running. I searched, but mostly found results in "parts for sale".