I have a 94 204 SE. The depth gauge that is installed I don't know how to program. Does anyone know how to program or where to find an online manual? The gauge doesn't have any brand marking other that a T at the top with solid line on both sides of T. It has a + and - button. On top of those buttons are 1 and 2, with 2 and 1 underneath. I can push both buttons to make it stop sounding a tone. I might be able to post a picture on here later. Hopefully someone else has seen this before.