I've got a 2007 model, 25ELH Yamaha outboard that I would like to hook a tachometer to the motor to get some WOT readings so I can get the best prop for this motor. Unfortunately, I haven't figured out where I need to splice the tach's sending wire into the wiring on the motor to get it to work. I think I am supposed to connect inline to the voltage regulator/rectifier, but I am not exactly sure where that is. Here is a pic of the wiring on my motor. Any suggestions would be appreciated.

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