@wpoll It's the red portion of the gauge that lights up, If you have it. It will come on with the bulb test when you first start the vehicle or if you activate the dash test or reset.
@Emory The guage will not stay exactly in the center for the whole range of the center "buffer" portion so it's not really as wide as it looks. It's easy enough to change when you get it figured out so doesn't hurt to try a few things!
