Hey guys. I just bought a Teleflex Tachometer to add to my 15' Center Console. I hooked up everything according to the directions, a switched power off the ignition, a ground, and a send wire from the rectifier on the motor end. When I turn the key, the needle drops to zero like it's supposed to, but then when I crank the motor, the tach just sits at zero, no movement at all.<br /><br />It's an '81 40Hp Mercury Outboard. On the rectifier, the wiring is Yellow Red Yellow. The instructions say to hook the send wire up to either of the yellow leads, I tried both, no luck.<br /><br />Any idea on where to start troubleshooting? My gut feeling is a bad rectifier, but how should I confirm that? I have access to a multimeter. What should I see off the yellow lead? How should I test the input and output off the rectifier? Finally, if it is the rectifier, how much should I expect to spend on a replacement?<br /><br />------------------<br />Netsloth<br /><br />15' Ashcraft Center Console
