Re: Speedometer and Tach.
I have a 1985 XR2 150 H.P. . I need to know how to hook up the speedometer and Tachometer. All was disconnected from the motor when I bought it and my Merc. manual doesn't show what i need. Thanks Lee
P.S. This would be at the motor.
Tachometer is normally hooked up through the dashboard harness off the controls. In the engine, it goes to either of the yellow wires on the rectifier, starboard side on theswitchbox mounting plate.
Speedometer is fed from a hose that comes up from the lower part of the mid through the same hole that the shift rod goes down through. Pitot hole in in the front of the LU, just above the point.
hope it helps
John