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Skunk boat and Seasick, thank you for your information and input. I greatly appreciated it. I am just about finished changing out some of the wiring, including proper ground wire size. Everything appears to be working now. Hopefully I’ll get her launched by mid-late April. Just in time for...

It was just by coincidence I ran the dedicated feed and fuse panel for my electronics, (The radio and fish finder that came with the boat were junk and it was a rats nest in the dash box. Replaced with new gear and dedicated power) not knowing at the time the house ground wasn’t hooked up. My...

My house feed goes to the Grady panel which has: nav/anchor light, horn, wipers, manual bilge fwd, manual bilge aft, cockpit lights x2, live well and wash pump, fresh, fuel tank gauge selector. Also feeds the fuse accessory block which has fresh water galley pump, cabin lights, and trim tab...

2004 LZ300XTRC hpdi.

Both tanks are connected to the ground through the sending units to the 3 way switch at the helm and then to the yammie digital multi function display gauge. The ground at the 3 way switch also is the ground for the switch light which ties into the boat ground in the Grady harness.

Everything was working last season, but the engine alarm went off a few times, each time I checked the temp at the sender on the head and always cool, oil tank was always full. I didn’t know at the time the negative house wire was never connected and taped up until I removed the batteries this...

The engine buzzer would go off randomly on occasion. Every time I checked the engine temp with thermo gun, always cool. The oil reserve tank and main tank were always full. At the time never thought the grounds were going threw the yammie wires. The yammie techs here said a voltage drop could...

Thanks for the info. So what I have is 10awg black & red back aft at the batteries. The red has the 40amp push button breaker. They go in the pvc tube fwd to the console. The 10awg black branches, one goes to the neg. on the small fuse block, 2nd goes to the Grady switch panel to provide...

I’m trying to locate the dc ground buss behind the helm area on my 1990 Gulfstream. The wire diagram for my model and year doesn’t show where all the ground (dc negative) wires from all the 12v components all connect together. There are some on the accessories fuse block under the helm, for...