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Old 14 August 2013, 04:56   #1
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Where/How to fit a battery isolator switch?

Being fed up with getting a flat battery due to lights/VHF etc left on, I have purchased a battery isolator switch - Hella 'Key' type...
I'm looking to fit it as near to the battery as possible and in the positive cable as I believe it would aid anti-corrosion if the positive is disconnected?
However, if I fit it through the rear seat console (where the battery is situated), the key is exposed and could easily be snapped off by passengers...
Is it OK to fit it through the battery box inside the seat console?
OR how could i fit it through the seat console? I know I could put it in a corner, but should it be externally fitted or internally with just the barrel exposed?

Thanks for your help (in advance)
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Old 14 August 2013, 05:10   #2
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Without seeing your setup, I'd put it inside something, e.g. console/seatbase etc. You need to protect it from corrosion & exposure to salt water or you will end up with more problems than you started with. Never underestimate the power of saltwater to eat all things electrical, especially when it's seasoned with a nice 12v dc supply.
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Old 14 August 2013, 05:21   #3
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Old 14 August 2013, 05:51   #4
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no piccie
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Old 14 August 2013, 06:15   #5
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I recessed my twin battery change over switch by making a box and sticking it on the inside with a hatch on the outside.
Searider 5.4 Project

I expect you will find a suitable enclosure/box that you can Sikaflex/screw into your seat unit. 100mm hatches are cheap and available in Black or White. Would leave it nice and smooth on the outside and protect the switch from the elements.
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Old 15 August 2013, 07:12   #6
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Isolator switch...

This is the switch....

I'm thinking of mounting it inside the rear seat but drilling an access hole in the top corner for the key... the protrusion for the key fitting would just sit proud of the seat side and by being in the corner should protect it from knocks and scrapes...
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Name:	Isolator Switch 002.jpg
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Old 15 August 2013, 07:48   #7
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Not the best switches.
the ones with a non removable knob on are far better quality in my experience.(lucas pattern)
like this one Ebay 111036585284
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Old 15 August 2013, 11:02   #8
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Key Isolator

Hi, I'm just in the process of ditching the same key switch you have and replacing it with a proper Blueseas marine switch. The Bluesea switch is more corrosion resistant and is certified petrol vapour safe so you won't blow up the boat - plus changing to house/engine dual battery setup with AVR.

Regards
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Old 15 August 2013, 11:16   #9
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You clould blow the ECU in the outboard if it turned off by mistake while using the engine (ETEC)
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Old 15 August 2013, 13:08   #10
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I had a battery switch that you had to use a key to unlock before you could turn it, the lock became solid with salt corrosion so no longer locked it, then after 6 months the switch itslef became rather twitchy due to corrosion. The lesson learnt was dont skimp on quality, salt will over time destroy everything. I replaced with a better quality isolator swith from blue sea marine, no problems since.
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