I'm fitting a battery cut-off to my car (more for security than safety) - therefore it's not a posh one with resistors etc, simply a cheap turn-key eBay special.

Does it matter which terminal I fit it to? The switch will be on my dashboard so I was favoring using the ground instead of the live but am interested to see if there is a right and wrong way to do it?

If I read Google then it's always the positive is used but that is in regards to racing regulations etc, which I'm not concerned with.

Positive!!!

You can use it for isolating your battery properly then. Earth should work but do it properly Dave

I put mine on the Neg side, purely to keep all the power cables as short as possible

steve

I would say the positive as well. That's what I did. I find it a really useful security feature in that it stops passers by switching the lights etc. on when the car is left somewhere unattended.

I bought ready made cables of the right length fairly cheaply.

Stu

Doesn't really make any difference, the battery is isolated either way. Just don't disconnect it whilst the engine is running.

As Mike says, it makes no difference.

If you're having to extend cables to do it, then work out which you have to extend the least and use that.

There's no motorsport insistence on isolating the positive (the Cartek Battery Isolator disconnects the earth for example)

If there's no difference, I would use the negative / earth.

Wyn

If fitting for security you can get away with fitting it in the lead from the battery that feeds the fuse box rather than the main battery cable.

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Originally posted by britishtrident
If fitting for security you can get away with fitting it in the lead from the battery that feeds the fuse box rather than the main battery cable.

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quote:

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Originally posted by MikeRJ
Just don't disconnect it whilst the engine is running.

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