Hi: I have a 2014 Kubota bx1870. Was mowing lawn when I noticed the low fuel light was on. No fuel gauge indication and tach. stuck on 3,000. I checked the 3 wiring harnesses behind and under dash. all seemed connected fine and were not loose.(before I forget, YES, 3/4 full of fuel). Glow plug light does not work at all. Only way the low fuel light goes out is to disconnect the battery. when battery disconnected, tach still shows 3,000. Tractor runs fine and mows fine. Any thoughts?