Hi all, I have one of these:Hour meter It doe snot seem to show me any RMP at all. I have the instructions here with me and uninstalled it...reinstalled.. reset it.. tried different modes... From what I understand, Itssupposed to show me the RPM and also count houres per the spark (once per revalution??) and count down to service set interval. All that is displayed on the LCD is "0.0 hours" whether the engine is running or not. What could I be doing wrong???? BTW, there is a black and a orange wire runnign out of the spark plug seal that I assume to be the "spark plug cable". Its not your conventional XR type spark plug cable.. Which one to I wrap around? The orang or the black... or both.. Here are the Specs: Large 7 segment LCD display Low cost and small size No power required Solid state electronics Quartz crystal Wide operating temperature range High reliability Standard is resettable, non reset version is available from factory Indicates operation in RPMs and hours Self programmable or factory set 1, 2, 4, cycle engine, or hour meter only Easy to install. Made in the U.S.A.