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Discussion Starter · #1 ·
I plan on mounting a battery cut off switch between the battery and starter solenoid. What size (Amps)switch do I need? Does it correspond with the alternator size? If I run a 130 Amp alternator do I need a bigger switch than if I run a 95 Amp alternator? I am planning on a 130 Amp alternator, if for no other reason than that is what I have out in the garage now.
 

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Most any battery cut off switch for an auto will be more than 130 AMPS. IMO it should be located as near to the battery as possible in the '+' line; any possible cutting of cable downline from switch will then be protected, also. Others will chime in...this may not shut you car off, if running, however.
 

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Don't forget to buy an extra "key" just in case.
 

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FFCobra Master Craftsman
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A good source for extra keys cheap: Harbor Freight sells a cut-off switch. I wouldn't trust their switch but I bought one for the keys that came with it.
 

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Discussion Starter · #6 ·
Dave,

I have a HF battery shut of switch, but there is no way I will use it. The terminal move when you rotate the key. I figure it would last a month or so, and once I get the beast finished, I'll want to drive, not repair.
 

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I saw a battery cut-off at wal-mart, it had 2-keys. I believe it was under $10 bucks.
 

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I have the finishline installed in the rear firewall.

I do not like the exposed terminals and am rethinking the battery in the rear. Mine
is recessesd in an ffrmetal box.

The reason is that in a rear end collision
it would be too easy to have gas and sparks
should the terminal short.. The setup
could be safer.

I may move the battery to the front and
find a better sealed cut off. A few vendors
have good front battery kits(Renolds and Forte)

HAs anyone found a good way to seal the
back of the cut off to prevent an accidental
short?
 

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section 8
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Buy Richards it's by far the coolest and it's a quality switch to boot. Bob
 

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Originally posted by Another Kevin:
... Does it correspond with the alternator size? If I run a 130 Amp alternator do I need a bigger switch than if I run a 95 Amp alternator? ....
If you don't mind, let me give a quick lesson on amperage. Your alternator will only put out as much as your system "draws."
A 130 amp alternator has the capacity to put out 130a should your system require it. Otherwise, it's only supplying what's requested.
If you have a system that's only going to draw 40 or 50 amps, that's all that will be provided.

That said, there's nothing really wrong with having a 130 amp alternator, especially if it's essentially "free." :D

HTH,

d



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