Tacho, Test-Fix-Replace

[RangerGus]

Hey there,
Great forum!
Need a wiring diagram for this Johnson 175, Ranger 361V to test, fix or replace the Tachometer.

Thanks for your help!

 

[oldboat1]

Might help (grey wire), along with instructions or diagram from the tach manufacturer: https://www.maxrules.com/graphics/omc/wiring/1989_89_150_175_35A.jpg

 

[RangerGus]

Might help (grey wire), along with instructions or diagram from the tach manufacturer: https://www.maxrules.com/graphics/omc/wiring/1989_89_150_175_35A.jpg

Thankyou. It looks right. I'll test voltage regulator also. I have a diagram of tach. pulse/rev is the gray wire. It was hard to tell what color it was back there under the console.
Thanks again.

 

[oldboat1]

Rectifier issues can affect both charging and tach. If the battery is charging when the engine is running, you should be OK.