Hour Meters - Honeywell ac/dc Hour Meters - LM Series. Digital, backlit meter UL/CE IP67 sealed, shock-resistant case 9 V to 64 V dc/ac (50 Hz to 500 Hz) operation. ac Hour Meters. 0 to 99,999.9 hours IP66/65 24 Vac to 264 Vac 50 Hz or 60 Hz Screw, spade, or lead wire Analog and digital versions Quartz Clock/Engine Hour Meter Installation Instructions PDF fileAt this point, the installation and wiring of your new VDO Quartz Clock is complete. Turn on the lights in the car and check to see that the clock and the lights are working properly. If they aren't, re-check wiring. Diagram C illustrates the time setting function. Wiring the Engine Hour Meter: (Diagram E) 1. IRING DIAGRAMS 29 - Hour Meters, LCD Meters, Mechanical PDF fileWIRING DIAGRAMS FOR AC HOUR METER APPLICATIONS HM N HM N HM N HM HM N HM N HM N HM N Single-phase 120V System: 2-Wire Connect one Enm Hour Meter Wiring # Download. ENM's series T56 LCD Vibration Activated Hour Meter. This meter can be installed anywhere on equipment with no special wiring connection or power source. ENM Counting Instruments > Electrical Counters > E6B Electrical Counter - Two- Hole Panel Mount > T14 DC Powered Hour Meter I. > T18 AC Powered Hour Meter III.