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Author
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Topic: Battery cut off switch
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prostreeter
Gearhead Posts: 157
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 03:49 PM
   
How do you hook up a cut off switch....The switch I have has 2 electrical prongs.Where do the hook to?
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Moneymaker
Administrator Posts: 26813
From: Lyons, IL, USA
Registered: May 99
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posted 03-31-2005 03:57 PM
Inline of the positive battery cable so as the switch will cut power from the battery.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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prostreeter
Gearhead Posts: 157
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 04:03 PM
Right on Alex....Glad I joined MM!
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Dreamcometrue
Gearhead Posts: 488
From: New-Brunswick,Canada
Registered: Apr 2004
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posted 03-31-2005 06:50 PM
Hi guys. I installed switches on my tractors, on the negative wire. An old mechanic told me that if you put it on the positive, it sparks the connection every time you turn it on or off and makes it wear faster.
So far, it's been working correctly.
Just my 2 cents.
Rino 
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Steve-UK
Gearhead Posts: 302
From: Wickford, Essex, England
Registered: Jan 2003
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posted 03-31-2005 07:06 PM
If you have an alternator, you may find that the engine keeps running, even after you turn the battery switch. If you are just using it as a battery isolater that is fine. But if it is to be used as a kill switch, then you might have to use a 6 terminal unit. [This message has been edited by Steve-UK (edited 03-31-2005).]
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DidgeyTrucker
Gearhead Posts: 1539
From: Greenbrier, TN USA
Registered: Oct 99
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posted 03-31-2005 08:09 PM
Are you using it to meet racing rules? The alternator connection needs to be on the battery side of the switch so it can be used as a kill switch to kill the motor.Tracy
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prostreeter
Gearhead Posts: 157
From: littleton,co
Registered: Mar 2005
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posted 04-01-2005 08:00 AM
I need the switch to pass tech.Trunk mounted battery.So its hooked into the alternator?
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capri man
Gearhead Posts: 7249
From: doerun, ga.
Registered: Nov 2000
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posted 04-01-2005 08:52 AM
you must run the output wire from your alt. to the battery side of the switch. otherwise the engine will keep running when you turn off the kill switch. good luck------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60 ft.
http://community.prestage.com/Member+Pages/789.aspx
M&M member #839
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prostreeter
Gearhead Posts: 157
From: littleton,co
Registered: Mar 2005
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posted 04-01-2005 01:27 PM
Thanks!
Did the job and it works.
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Dubz
Gearhead Posts: 1890
From: Manitoba Canada
Registered: Oct 2002
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posted 04-02-2005 12:11 AM
Anyone have a diagram or something as to how to hook this up? i've heard it asked tons of times, but still really don't know what people are talking about.
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Billy Mac
Gearhead Posts: 857
From: S.Ga
Registered: Aug 2003
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posted 04-02-2005 12:38 AM
Really quite simple, Dubz....with the battery relocated to the trunk.....and the Master cut off switch mounted at the rear of the car (within easy reach of track personnel...and marked as to which way is "off")......The "Positive" terminal of the battery is linked to one side of the switch...(either side....does NOT matter)........the other side of the Switch is then routed to the front of the vehicle....(normally to the starter solenoid).....and from there to the different 12 volt connections required..... IF there is an alternator in the equation....that wire goes back to the battery side of the Switch at the rear of the vehicle........so that ...in case of an emergency..when the Switch is turned to the "off" position.....ALL power to the vehicle is terminated!! Hope this helps!!
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capri man
Gearhead Posts: 7249
From: doerun, ga.
Registered: Nov 2000
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posted 04-02-2005 02:22 PM
now im confused billy mac!!!  ------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60 ft.
http://community.prestage.com/Member+Pages/789.aspx
M&M member #839
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Billy Mac
Gearhead Posts: 857
From: S.Ga
Registered: Aug 2003
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posted 04-03-2005 02:42 PM
LOL....that's easy enough to accomplish, Mike.....(see.....it worked!!..wink)
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GregK
Gearhead Posts: 221
From: Clear Spring, Md
Registered: Mar 2004
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posted 04-03-2005 06:14 PM
I have a question, I have a four post Moroso switch that I'm installing in my 68 coupe. Can I run the power wire From my MSD Box to the little post on the switch and then a jumper from the other little post to the batter post on the switch? Will this shut off my car with Alt. if I cut off power to MSD Box?------------------
1968 coupe 351W, Bored.030,Stock Crank, Stock Rods,Decked,KB Hyper. flat top pistons. Bullet Cam 231/[email protected]/.541 lift,Stock heads,RPM Air Gap,BG 750 Speed Demon,MSD Ignition,C4 Trans.,9" rear with 4.11 posi. best time 12.323 @ 106.80 mph in the 1/4
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