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Chartplotter/VHF Radio Electrical Question

Shonky

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I'm looking for information on how to connect a Simrad GO7 XSR and Standard Horizon GX1700 to my 2017 FSH 190. As of right now I've got the G07 XSR on ACC1. I was wondering if I could also run the Standard Horizon off the same switch, or should I go ahead and use ACC2? I'd like to keep ACC2 open for other projects if possible.

Thanks in advance for your help.
 

FSH Resonders

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The Simrad and VHF can not be on the same switch/breaker. The VHF pulls 7 amps during transmit. The Simrad pulls 3 amps you can use the Simrad breaker (aux switch 1- multiple out spades) to power a NMEA2000 buss with out issues.
 

Shonky

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Thanks for the help. I'm thinking I might just got straight to the battery with the VHF Radio. I'd really like to hang on to the extra switch (ACC2) for spotlights I want to install.
 

Julian

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I'd keep the switches for things that dont typically have their own power switches (like lights) and I'd install an aux fuse box behind the helm. I have 2 in my boat, one behind the helm and one at the battery. Connects things like GPS, radio, dual usb ports etc. (Links to my install in my signature 242X link-if you are on your phone you wont see my signature unless you turn your phone sideways)
 

Liveto99

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Just remember to put a fuse by the battery on any electrical line that goes anywhere. I installed a fuse block in the center consul to hook stuff too but I put a fuse by the battery on the line going to the fuse block, if it wears through anywhere that fuse will blow and should prevent a fire. The fuse should be sized to blow before the wire gets hot when there is a direct short and starts a fire. So the wire size running away from the battery should determine the fuse size.
 

Liveto99

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Something like this will give you plenty of options in the future. If you mount this in the consul.5E24743F-76E5-4107-82A8-43758A2B0081.png
 

Shonky

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Thanks guys! The advice and help is much appreciated.
 

Shonky

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One more question:

Do I connect the Blue Sea Systems to the "House" switch in the battery switch assembly, or just got directly from the battery through a fuse to the fuse box? If I connect to the "House" switch i assume I will need to put a fuse after the switch before it get's to the Blue Sea Systems block.
 

FSH Resonders

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Fuses should go in place as close to the power source as possible in this case the battery disconnect, and before any switch or power load.
 

Bubblehead

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I powered my VHF from the horn switch, on the hot side
 

marmstufl

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@Julian : Your tutorials in your signature are awesome, I have to say that first and foremost. I'm going to get one of the Blue Sea Fuse Boxes for my FSH210, mounting it in the center console. For the positive/negative connections, I'm just going to run positive and negative wires from the #2 (House) battery to the breaker, then mount it in the center console. I anticipate installing a GPS and some other electrical items that won't be on the standard switches.

Anything I should be aware of on the length of the battery wires to the Fuse Box? Any specific gauge to use? I anticipate putting in a VHF Radio, GPS, and potentially some guest USB Ports. It should make the installation especially easy only running wires from the installation points to the center console, as well as having those items strictly draw from the House Battery and not connected to my Starter.



**UPDATE**

Answered my own question by following a guide from TheHullTruth, it depends on what types of items you plan on connecting to the fuse box.
 
Last edited:

FSH Resonders

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What it the rating on the fuse block you have chosen? - the fuse block wiring should rated for the maximum x 1.5 of the fuse block, a main circuit breaker or fuse should be place inline (between the battery and the fuse block)
When running the battery auxiliary wiring protect them from chaffing with nylon conduit material.
What is the recommended fuse rating on the VHF, GPS, etc? this will determine the fuses installed and the wire rating.
 
Messages
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Reaction score
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Boat Make
Yamaha
Year
2018
Boat Model
FSH Sport
Boat Length
21
I'd keep the switches for things that dont typically have their own power switches (like lights) and I'd install an aux fuse box behind the helm. I have 2 in my boat, one behind the helm and one at the battery. Connects things like GPS, radio, dual usb ports etc. (Links to my install in my signature 242X link-if you are on your phone you wont see my signature unless you turn your phone sideways)
This is exactly what I did - make sure you have extra fuses as well in case it blows and you need to replace on the water.
 
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