"I've got a 1972 Johnson 5
"I've got a 1972 Johnson 50HP,2-cycle, 2-cylinder, and want to put a tachometer on it. I bought a Faria, 7000 RPM used tach that came off a 50 HP Evinrude before he junked the boat. Therefore there is no wiring harness with it. It is a TCC602A (model) and there are...