Someone mentioned a disconnect switch to prevent drain from depth finders etc. The local Marine dealer only shows expensive devices. Who sells the basic on off switch? Thanks.
March 18, 2015 at 2:58 pm
#1524814
Battery disconnect switch or simple on-off switch on battery post?
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March 18, 2015 at 3:10 pm #1524826
I think I have seen them at Fleet Farm, but there are lots of option on Amazon.
March 18, 2015 at 3:10 pm #1524828Any electrical supply house can furnish you with a proper switch. Keep in mind that it will most likely be MORE expensive than buying a marine disconnect switch.
A proper switch will be corrosion resistant. Be rated for the amp load the starter will put on it. Have large enough terminals to handle the cable ends. Be mountable so it can be secured to the boat where it will not short against anything.
A standard marine cutoff switch is designed to do all this.
March 18, 2015 at 3:13 pm #1524834Overton’s
March 18, 2015 at 3:30 pm #1524841Harbor Freight and Fleet Farm have switches similar to these in Automotive.
For a single battery, this would be the way I’d go.
Some boats, especially larger recreational boats, are set up with multiple batteries in the engine compartment. For those, you would want a marine multi-battery switch because these switches control which battery is in use as well as provide an “all dead” cutoff.
Grouse
March 18, 2015 at 8:33 pm #1524930there’s also this switch, that could be mounted thru the battery compartment, and has a removeable key.
HRG
March 18, 2015 at 9:07 pm #1524944there’s also this switch, that could be mounted thru the battery compartment, and has a removeable key.
HRG
The above switch is only rated for 50 amps. Might be best to double check the amp draw of the starter motor to see if that is adequate.
March 19, 2015 at 1:59 am #1524982<div class=”d4p-bbt-quote-title”>Hot Runr Guy wrote:</div>
there’s also this switch, that could be mounted thru the battery compartment, and has a removeable key.HRG
The above switch is only rated for 50 amps. Might be best to double check the amp draw of the starter motor to see if that is adequate.
Good point sir, it seems impossible to find the manufacture specs for that switch. I agree with you, something like a Blue Sea #9003 is probably the right tool for the job.
It’s what I use. HRG
Attachments:
main-disconnect-1.jpg
March 19, 2015 at 7:51 am #1525015What I did on my previous boat was to run the 50 amp switch
BUT
connect the starter directly to the battery
AND
only connect the accessories to the disconnect switch.March 19, 2015 at 8:46 am #1525033What I did on my previous boat was to run the 50 amp switch
BUT
connect the starter directly to the battery
AND
only connect the accessories to the disconnect switch.That would be allow a lower amp switch, but to ONLY run the starter directly to the battery would also require opening up the engine wiring harness to separate the starter circuit. Did you separate out only the starter circuit or did you run the entire motor harness directly to the battery? The motor harness is feeding not only the starter but all the rest of the computer components for the engine. Some of which may have a constant draw for memory.
March 19, 2015 at 9:59 am #1525056Just to be clear, this was on a 78 Johnson 70HP
so
I am guessing it did not have a lot of electronics attached to the motor that
did much if any draw down.March 19, 2015 at 10:45 am #1525067<div class=”d4p-bbt-quote-title”>Huntindave wrote:</div>
<div class=”d4p-bbt-quote-title”>Hot Runr Guy wrote:</div>
there’s also this switch, that could be mounted thru the battery compartment, and has a removeable key.HRG
The above switch is only rated for 50 amps. Might be best to double check the amp draw of the starter motor to see if that is adequate.
Good point sir, it seems impossible to find the manufacture specs for that switch. I agree with you, something like a Blue Sea #9003 is probably the right tool for the job.
It’s what I use. HRG
HRG,
did you install this yourself?
FDR
March 19, 2015 at 11:37 am #1525079Good point sir, it seems impossible to find the manufacture specs for that switch. I agree with you, something like a Blue Sea #9003 is probably the right tool for the job.
It’s what I use. HRG
HRG,
did you install this yourself?
FDR
[/quote]Yes sir. Here is the back-side view. Motor positive and the fuse panel are connected to the switch, then a short battery cable to the battery.
HRG
Attachments:
main-disconnect-2.jpg
March 19, 2015 at 12:08 pm #1525102Look how neat and organized!
March 19, 2015 at 12:08 pm #1525103Thanks for the picture HRG. Nice work!
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