Toadfish88
New member
Need help connecting analog tach to 05 yamaha 225 4stroke. My sea pro boat is equipped with analog tach made by Teleflex, it was connected to a mercury 200hp 2stroke EFI engine which blew up. I purchased a used 05 225hp yamaha 4stroke engine to replace it. I'm having trouble trying to figure out how to connect the tach to the engine harness. I've watched videos that talked about an engine having 4poles, 6poles etc. and have tried the different settings on the back of the tach. Also I have read something about a digitally controlled outboard needing an analog gage interface, is this the case in this situation? I hope not, as the prices on those units are a bit steep. If you have the time and the knowledge to help me out it will be greatly appreciated. Thanks!