I recently replaced all the lights in the back of the odometer on my 07 Fx4 and ever since reinstalling it my tachometer has been screwy. It will rest at numbers other than 0 when off or idling causing an inaccurate reading while driving. I have noticed that disconnecting my battery seems to reset it back to 0 but after a few days, it'll go back to being off. Any ideas on causes and fixes? Thanks!