Simple battery cut off - Defender Source
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  #1  
Old March 1st, 2013, 09:12 PM
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Simple battery cut off

Hi guys I think I have a power trickle draining my battery. I wanted to install a simple battery cut. Does anyone know where I can get some spare, short cable to make the attachments to the negative post? This is the switch I am getting:

http://www.walmart.com/msharbor/ip/C...81640&veh=mweb

Just need some cable now. Thanks. I searched other threads on this but no info on cables.
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  #2  
Old March 1st, 2013, 09:32 PM
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napa, autozone, etc...near the batteries...
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  #3  
Old March 1st, 2013, 09:43 PM
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Make sure the cutoff switch is properly rated for your battery.

I recently bought a bigger battery and have to upgrade to a beefier cutoff switch.
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  #4  
Old March 1st, 2013, 09:47 PM
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Thanks guys. How do I determine proper rating? This is my battery specs: CCA is 850. CA is 1000. RC minutes at 25 amps is 140. Volts 12.
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  #5  
Old March 1st, 2013, 10:02 PM
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Looks like the one you are getting is rated for 50 amps but not sure if that's sufficient.

My new battery has 1150 cca and was too much for the one that was on there previously.
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  #6  
Old March 1st, 2013, 10:03 PM
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I guess my question is which part of the battery spec do I need to match up to the switch. Amps?

------ Follow up post added March 1st, 2013 10:04 PM ------

Oops we messages same time. Got it. Will look around thanks
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  #7  
Old March 1st, 2013, 10:10 PM
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Why not just fix the battery draw?
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  #8  
Old March 1st, 2013, 10:15 PM
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Clearly you don't own a d90 . They are hard to pinpoint. Plus I don't drive her for weeks at a time so I can kill a couple birds with this stone.
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  #9  
Old March 1st, 2013, 11:54 PM
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Try Summit Racing, too.
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  #10  
Old March 2nd, 2013, 08:07 AM
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Quote:
Originally Posted by ssi19 View Post
I guess my question is which part of the battery spec do I need to match up to the switch. Amps?

------ Follow up post added March 1st, 2013 10:04 PM ------

Oops we messages same time. Got it. Will look around thanks
If you are trying to match the switch rating to the battery CCA, then I don't think you are going to find a switch with a continuous rating high enough. There are some switches out there (look at jegs / summit) that have around 250 amps continuous and 2500 amps short term.

Here's one:
http://www.jegs.com/i/Flaming+River/...003-1/10002/-1
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  #11  
Old March 2nd, 2013, 08:19 AM
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The Blue Sea ones, made for boats, are also very popular. As an example, this switch is rated for 1500 Amps for cranking, and then 350 Amps continuous in case you have a winch or something.

http://www.bluesea.com/products/6006...th__Knob_-_Red
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  #12  
Old March 2nd, 2013, 02:14 PM
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Thanks much. Will definitely review my power needs. My original question was really about where to get some wiring to interject between the cut switch and the negative terminal. Someone suggested napa/auto zone. Any special type?
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  #13  
Old March 2nd, 2013, 02:40 PM
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Not really... battery cable is battery cable. Look at what size you have now and match it (It will say AWG or #, like AWG4 or #4). Make sure you get the right color to save headaches later. Sounds like you are working on the hot side, so red.
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  #14  
Old March 2nd, 2013, 02:47 PM
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I was under the impression from other threads black / negative is better. Does it matter which side you choose?
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  #15  
Old March 2nd, 2013, 02:50 PM
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Not really. You are just looking to break the circuit. Whether you do it on the positive or negative is really inconsequential. All the cutoffs I have seen have been on the hot. Not really sure why.
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  #16  
Old March 2nd, 2013, 02:52 PM
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Thanks for the help Navy
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  #17  
Old March 2nd, 2013, 03:44 PM
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Well when it comes to the way DC electrical current flows. The experts say that it flows Negative to Positive. That is what I was taught in the Navy. Although Neill is right. If you break the circuit the current will stop flowing. So either way will work.
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  #18  
Old March 2nd, 2013, 07:40 PM
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Isolator switch

RN has one called an Isolator Switch 400Amp 12vdc & 200 amp 24 vdc
Model IS - 102
Of course they put their proline tag over the label
PLH748 Battery Switch

I just installed & yes I used red side has helped a lot comes with a plastic key you remove.

I did buy this awhile ago long before I got seat box painted, tho.
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  #19  
Old March 4th, 2013, 11:52 AM
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An excellent source for battery cable is Saturn Surplus.
http://www.saturnsurplus.com/electrical/electrical.htm

I used military surplus 0 gauge wire and battery terminals & covers from them for my Lightweight. Inexpensive and appears to be very high quality.
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  #20  
Old March 4th, 2013, 12:03 PM
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I would not bother with a switch, rather, there are battery mounted terminals with a little knob you undo to separate the connection. I bought one for $20 or less at my local speed shop. Let me find a link.

This is what I have. Works great. I just put the D90 in the garage and disconnected the battery which took all of a minute.

http://www.grainger.com/Grainger/BAT...&cm_vc=IDPRRZ1
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