Profile: EDDY LOUCK

Let me start with I love the product. I have everything I need except the odometer and trip meter. Says N/A for both. I cannot find a setting to get these to work. I wouldn’t even mind having the manually put the mileage in and then it just adds to it via speedometer. I have an aftermarket fuel sender and I don’t feel like it’s super accurate, so I’d like to verify levels by mileage. Any help will be appreciated. 2003 Chevrolet Kodiak C6500 with Cat 3126E and Allison 2000 transmission.