Speedometer not working but all other gauges are? Solved

Speedometer not working but all other gauges are? Solved I have a 2005 Gulf Stream class A motor home on a Ford V-10 chassis. I went to take the motorhome out and the speedometer doesn't work but the odometer and trip meter do. Can anyone tell me what the problem may be and where the part is located to fix this problem. I did try and replace speed sensor in the rear end but didn't fix the issue I'm sure its something easy to fix but hoping someone else has had this issue