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    ‘92 Johnson 90HP - Bad rectifier?

    That helped me tremendously! A quick visual reference until you find the culprit. Just ran the motor for a few minutes without any issue, battery appears to be charging now as well. (y)(y)(y)
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    ‘92 Johnson 90HP - Bad rectifier?

    Took a look under the dash and it didn't take me long to figure out the problem. Someone at some point decided it would be good to make a bracket for the fuel gauge out of.... metal. They wrapped electrical tape around the posts and that was all that was separating everything from shorting...
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    ‘92 Johnson 90HP - Bad rectifier?

    Getting somewhere! Unplugged accessory plug under dash (to tach, fuel, and PSI gauges)…. No short! 12V Light doesn’t light up when turned to on. Only when key turned to start. So now I’m going to inspect all wiring to the gauges and see what I can find.
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    ‘92 Johnson 90HP - Bad rectifier?

    Crosbyman, thanks for your help. I connected a 12v blinker bulb inline to fuse holder. It is bright as soon as I flip the key to ON. I will start in the morning trying to narrow down what wires are causing the issue. Do you mean start disconnecting wires from the large red connector plug one...
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    ‘92 Johnson 90HP - Bad rectifier?

    I just got through replacing the Rectifier/Regulator and got everything hooked back up. Trims & tilts up and down perfect when key is off. Did that for several minutes without issue. I turned key to on position and after a minute maybe, it blew the 20A fuse again. I'm pretty certain the R/R...
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    ‘92 Johnson 90HP - Bad rectifier?

    Thanks for the guidance on the flywheel. The multimeter I have now is a cheap one I’ve had for years. I will be getting a new one. I did also start the engine via jumping the solenoid…. No change in voltage at the battery whether motor was running or shut off. But I’m also not sure how the...
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    ‘92 Johnson 90HP - Bad rectifier?

    Unfortunately on this engine model it seems I'll have to pull the flywheel and stator to replace the R/R?
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    ‘92 Johnson 90HP - Bad rectifier?

    I tested this resistance again on the stator with wires disconnected from bus, and some alligator clips. It went down to a steady 1.0 ohms... and when I just touch multimeter leads together I have .3 ohms. So if you are supposed to subtract that, I actually do end up with .7 ohms? Just...
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    ‘92 Johnson 90HP - Bad rectifier?

    Okay, got a chance to do some readings on the R/R. Top yellow wire to red wire: Reading one direction but not the other Bottom yellow to red wire: NO READING EITHER DIRECTION From Gray to Engine Ground: 10K ohms For reading from yellow wires to ground, I couldn't get any reading. Is case...
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    ‘92 Johnson 90HP - Bad rectifier?

    Good to know! Did you have similar symptoms with your bad regulator/rectifier?
  11. L

    ‘92 Johnson 90HP - Bad rectifier?

    I didn’t get any reading from either yellow wire to a ground… assuming I tested correctly. See attached picture. Two circled wires are what I tested and then the circled hole I used as ground.
  12. L

    ‘92 Johnson 90HP - Bad rectifier?

    I did a resistance test on the two yellow wires from the stator. Got a reading of 1.3 Ohms. Is that what you are referring to?
  13. L

    ‘92 Johnson 90HP - Bad rectifier?

    Hello all, first timer here with a question on my 1992 Johnson 90HP outboard, model TJ90TLEND. First off, since I bought the boat in December, the Tach and Fuel gauges have intermittently not worked… would just go down to 0 RPM and fuel showing empty. Other than that boat ran great. Maybe an...
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