I bought a replacement tach, but have no wiring schematic. It's an OMC P/N 176301-22-K-U (7000 rpm, 6 pulse with OMC system idiot lights). I'm going to replace my tach and separate idiot light gauge with this one, but I don't have the pin-outs for the connector in the back. 
Looks like I'll have to build a connector. Oh, the current tach doesn't work (verified that the tach is bad, used a good one to check) and I want to put an hour meter in where the systems gauge is now. Running a '98 Johnson 200 Oceanrunner.<br />If anyone has a schematic or can point me to one, I'd appreciate it. <br />thanks
Looks like I'll have to build a connector. Oh, the current tach doesn't work (verified that the tach is bad, used a good one to check) and I want to put an hour meter in where the systems gauge is now. Running a '98 Johnson 200 Oceanrunner.<br />If anyone has a schematic or can point me to one, I'd appreciate it. <br />thanks