I recently aquired a 74 240D. The cars in ok shape but its been sitting for 6 years in a garage. Heres the problem. The car wont crank at all. The engine is not ceased cause it rotates when i pop the clutch in gear. I have voltage to the starter. I seem to have no voltage to the glow plugs. Anyone have any ideas on what to try next ? Thanks in advance for the info !