DON’T BUY An Alternator Yet If Battery Is Not Charging.

On this video I show you an instance when there’s not alternator output, and why testing a little deeper may save you the money on a new alternator.
Thank you for watching and hoping you can get something out of this video.
Take care.
Pete
us4marinerepair.com

[@Money_line_Miami]

Peter is the best. Thanks for the knowledge

[@us4marine]

Hi Money, thank you for stopping by and for your great well intentioned comment. Glad to have you on board. Take care. 👍🏻👍🏻

[@TomB9685]

THANK YOU! I ordered an alternator for my parents ‘13 150 Fourstroke, but found the problem in minutes because of this. Exactly as you described; no voltage at the alternator terminal and a failed 100A inline fuse. New cable and it’s working great.
That ‘13 engine had a different-looking inline fuse, but the failure was identical. The replacement cable is the same as in your video.

[@us4marine]

Hi Tom, thank you for sharing. I’m glad it helped. Take care. 👍🏻

[@AchikSarih]

Merci beaucoup ❤❤❤❤❤❤❤

[@tommueller509]

This is not unique to 2017-2018 150. The newer optimax models also had this same setup, and all 2015 and up mercury outboards from 115-400hp have a similar design.
Usually this fuse fails if the batteries were hooked up backwards at some point.