1986 Johnson 70 not charging

[anesthes]

Finally got around to putting the pontoon boat in, and I noticed my voltage gauge (digital) is showing only 12 volts when running and no decrease when the engine is off. Appears to not be charging. Tach is working properly though. Not very familiar with the electrical system on this. Would you assume just a bad rectifier or could the stator be bad?

Where does the "charge" wire from the rectifier get spliced to the battery ? Is it somewhere under the helm or part of the engine harness and its spliced to the battery lead at the solenoid ?

Thanks!

 

[racerone]

Wee red wire at the solenoid.

 

[anesthes]

Wee red wire at the solenoid.

Ok Thanks. So the charge circuit is all contained in the power head. I ask because I changed the helm, wanted to make sure I didn't goof something.

So if the tach works would one assume the stator is fine or is the charge part of the stator separate ?

 

[racerone]

Stator does 2 things.----Charges the battery via the rectifier.----Provides voltage pulses to the powerpack for ignition,----Rectifier is not that much $$ and easy to change out.

 

[Crosbyman]

looks like a simple full wave 3 wire rectifier tons of them on amazon if your want to rig or try one up for a few dollars. 2 yellows get the AC .. the red +goes to the selenoid...incoming battery wire the negative -_ pin goes to ground just bolt it up.

here is one model

Amazon.ca Something Went Wrong / Quelque chose s'est mal passé

other models available 25 50 amps +

 

[anesthes]

Thanks guys, I'll give it a try!

 

[Crosbyman]

 

[anesthes]

The new rectifier appears to have solved the problem. See 13.6 volts now when cruising. Thanks!