I rewired the tach using the wiring setup that FanMan provided and it's working now. For info I searched eBay for LED tachometers and found no less than four different wiring schemes. My tach didn't come with any wiring instructions so it was a guessing game from the start. I'm not complaining as the tach cost me $9 delivered. Just a heads up to anyone buying one.
Thanks FanMan, hman and MKSJ for your help.
Tom S.
Thanks FanMan, hman and MKSJ for your help.
Tom S.