Yamaha 25 2stroke crossed battery wires. (HELP)

[George168]

Hi guys.
So I have a yamaha 25 2 stroke 1998 engine and took the battery out yesterday to charge it.
When I I reconnected last night I connected the polarities in reverse ( tried doing a day time job at night) and since then the engine doesn't seem to be producing a strong electric current. When connecting the battery the wires melted so I had to replace them but when I attach the engine wires straight to the navigation lights they don't seem to be as bright as they were before. Any suggestions to what the issue might be?

[Poly]

Start with a multimeter and check battery and the voltage at various places (like at the lights).

[jeffstevens763@g]

i would say you have blown your rectifier/regulator

https://www.justanswer.com/boat/5ewz...-polarity.html

[George168]

Thanks for the response guys. After replacing all the wiring turns out it was indeed the rectifier. Ordered a new one from Yamaha for 120 euro installed.