I am trying to help a good friend out with his Nitro boat. He has a 2001 Optimax on the boat and what I believe is a total ground issue within the boat. He does get one beep when turning key on and one also when starting, but it does start. I do believe that 2nd beep is a low voltage issue. But here is the main part. When he turns on his main accessory panel power button, it drops the voltage below 12 volts and when he turns on any accessory, i.e. livewell or pump out, it drops to less than 8. Can anyone help with where the ground wire comes from that goes to the fuse box to power the panel? Also, how can he run a separate ground wire to the panel to see if that is the problem. Any pics would help to show where he can hook up the ground and run a test wire... Thanks in advance for your help!
MZ if you need to text the pics, please do so. 603 731 5975
Thanks for all your help!