2004 DF140. The four lights and beeper come on and turn off at key-on. After that, I get a momentary blink of the REV light which I assume is part of the ENGINE HOURS code. I get no movement of the tach needle at key-on or when running. I read here the single yellow (not the 4-pin) is the tach signal. Any ideas on testing for this issue? Also, I’m forgetting how the tach behaves when doing the engine hours. Does it sweep full scale before settling on the hours level? Thanks in advance for any help. C
