- Joined
- Jan 9, 2014
- Messages
- 4,319
- Location
- USA
- Vessel Name
- N/A
- Vessel Make
- 1999 Mainship 350 Trawler
1999 MAinship 350 Trawler (Dual Helm)
2011~2012 Yanmar 6LPA-STP2
Sunday, the tachs stopped working while underway. At first I noticed the one at the upper helm was bouncing, then it died. The tach at the lower helm also died. The volt meter showed I was at 14.4 Volts, so the alternator was still working.
I know the tach is off of the alternator. Last year, the alternator was not putting out voltage, so I swapped it. At the time the new one was also not putting out voltage, so I was suspecting the exciter wire. At that time I noticed the tach was also not working.
After fiddling with the wires on the connector to the alternator, the tach came back as did voltage to the batteries.
I left the new alternator installed and put the used one in a box in storage since I felt it wasn't the alternator that was the issue.
Now I find the tach. dead and the alternator itself putting out voltage.
Where should I start troubleshooting and how?
2011~2012 Yanmar 6LPA-STP2
Sunday, the tachs stopped working while underway. At first I noticed the one at the upper helm was bouncing, then it died. The tach at the lower helm also died. The volt meter showed I was at 14.4 Volts, so the alternator was still working.
I know the tach is off of the alternator. Last year, the alternator was not putting out voltage, so I swapped it. At the time the new one was also not putting out voltage, so I was suspecting the exciter wire. At that time I noticed the tach was also not working.
After fiddling with the wires on the connector to the alternator, the tach came back as did voltage to the batteries.
I left the new alternator installed and put the used one in a box in storage since I felt it wasn't the alternator that was the issue.
Now I find the tach. dead and the alternator itself putting out voltage.
Where should I start troubleshooting and how?