Have Boat Questions? Ask a Boat Repair Expert.
Hi and thank you for your question.
Since you are not getting the red light coming on when the blue connector is unplugged, it sounds like the multi funciton meter has failed. Two things I would suggest. See if you are getting battery voltage on the Red/Yellow wire coming OUT of the meter. (goes in red, comes out R/Y). One other test would be to make a jumper lead and ground the black wire coming out of the meter and see if it either powers up or the red light for the pad lock comes on with the blue connector unplugged. The only other easy test would be to check for continuity from the black wire on the harness side of the connector that has 4 wires, Green, Pink, Black and Red, to an engine ground. You should show continuity to ground.
Yamaha does not provide wiring diagrams for the internals of the multi function meter so if we have power in and nothing coming out, the meter has failed. If you have any other questions, feel free to ask.
As long as the replacement meter is good, it should fix you up!
If you have any more questions, feel free to ask.