05-05-2010, 02:38 PM
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#1
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Killswitch
Hey I have my battery relocated to the trunk and the drag way I go to told me that I need to have a kill switch when running a battery mounted in the rear. Whats the best way to wire the kill switch?
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05-05-2010, 06:05 PM
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#2
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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I would say between the battery and the altenator and a fuse. Just use the correct gauge wire. (8 gauge I think)
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
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05-05-2010, 07:29 PM
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#3
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AutoCross Alero
Join Date: Nov 2003
Location: South Texas
Posts: 2,759
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from the battery to the kill switch, kill switch to the starter. they need to be able to disconnect in case of accident.
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05-05-2010, 08:22 PM
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#4
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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Why to the starter.
I thought it did nothing after the car was running
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
www.facebook.com/kb0177
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05-05-2010, 08:40 PM
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#5
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GLS member
Join Date: Jul 2006
Location: wisconsin
Posts: 2,733
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How about this...
Chassis > Bolt > Wire > Killswitch > Wire > Negative battery post
Simple enough..
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05-05-2010, 09:42 PM
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#6
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Quote:
Originally Posted by clutch1
How about this...
Chassis > Bolt > Wire > Killswitch > Wire > Negative battery post
Simple enough..
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Dragway said it needs to be on the positive terminal to disconnect the alternator.
I was thinking of this, positive feed from engine bay to the switch, then from the switch to the positive terminal on the battery.
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05-05-2010, 09:59 PM
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#7
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AutoCross Alero
Join Date: Nov 2003
Location: South Texas
Posts: 2,759
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Quote:
Originally Posted by AtomicX
Dragway said it needs to be on the positive terminal to disconnect the alternator.
I was thinking of this, positive feed from engine bay to the switch, then from the switch to the positive terminal on the battery.
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basically they need to be able to kill the power to the vehicle in the case of an accident or emergency, which means kill the switch kills the power to the vehicle.
on older vehicles the alternator wire was either strait to the battery or to the starter.
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05-05-2010, 09:59 PM
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#8
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
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Quote:
Originally Posted by AtomicX
I was thinking of this, positive feed from engine bay to the switch, then from the switch to the positive terminal on the battery.
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yep you just need to break the circuit
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05-05-2010, 10:02 PM
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#9
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Now any ideas where to mount the switch?
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05-05-2010, 10:05 PM
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#10
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AutoCross Alero
Join Date: Nov 2003
Location: South Texas
Posts: 2,759
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it needs to be easily accessible at the rear of the vehicle if i remember correctly.
Blackjack should have one, hopefully he will chime in.
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05-05-2010, 10:12 PM
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#11
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Having it the way I said it would definitely disconnect the alternator as well?
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05-05-2010, 10:37 PM
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#12
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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^yea, just put in inline on the wire that goes from the alt to the battery. done.
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2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights
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01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods
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05-05-2010, 11:20 PM
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#13
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Jack-Wagon
Join Date: Mar 2005
Location: Houston, TX
Posts: 3,834
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Doesn't really matter about whether it's positive or negative really. I just ran battery neg/switch/bumper bracket. Really if you lose your ground, your computer dies = no ignition = engine dies = alternator stops making juice = no electrical. However, in any case I'd follow the guidance of the track officials, because they're the ones to tell you to "get your effing car outta here" instead of giving you the thumbs up.
Oh, and for location, I mounted mine in the back bumper on the upper slope just below the trunk.
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05-06-2010, 01:29 AM
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#14
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GL Member
Join Date: Aug 2008
Location: Kansas
Posts: 884
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I have two battery's but a circuit breaker. Do you guys think that is well enough, because I would like to get some practice going down a drag strip before I get my z going.
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2002 Oldsmobile Alero GL 1990 Nissan 300zx n/a 1991 Nissan 300zx TT
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05-06-2010, 09:49 AM
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#15
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Quote:
Originally Posted by BlackJack
Doesn't really matter about whether it's positive or negative really. I just ran battery neg/switch/bumper bracket. Really if you lose your ground, your computer dies = no ignition = engine dies = alternator stops making juice = no electrical. However, in any case I'd follow the guidance of the track officials, because they're the ones to tell you to "get your effing car outta here" instead of giving you the thumbs up.
Oh, and for location, I mounted mine in the back bumper on the upper slope just below the trunk.
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The reason they wanted me to use the positive is because it ensures the deactivation of the alternator exciter wire.
So would the setup like I said earlier work to shut off everything?
Positive feed going into trunk to the switch, then from the switch to the battery in the trunk.
Also can I get a picture of your switch on your bumper blackjack?
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05-06-2010, 01:08 PM
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#16
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Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
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Quote:
Originally Posted by AtomicX
The reason they wanted me to use the positive is because it ensures the deactivation of the alternator exciter wire.
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then they don't know how electricity works. I know you need to follow their rules (like bj said) but if there isn't a full circuit, then there is no power anywhere.
cutting power or ground, cuts electricity as a whole.
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05-06-2010, 02:13 PM
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#17
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GL Member
Join Date: Sep 2007
Location: Massachusetts
Posts: 473
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Quote:
Originally Posted by cherrington17
then they don't know how electricity works. I know you need to follow their rules (like bj said) but if there isn't a full circuit, then there is no power anywhere.
cutting power or ground, cuts electricity as a whole.
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I have two grounds, one ground under the hood thats grounded to the frame (the grounds that went to the old battery under the hood), and a ground on the battery in the trunk going to the frame.
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05-06-2010, 06:28 PM
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#18
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Jack-Wagon
Join Date: Mar 2005
Location: Houston, TX
Posts: 3,834
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yeah, here it is. Sorry the trunk is open, but it's offset to the passenger side. You should be able to see the "Moroso" label in red on the bumper.
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05-06-2010, 06:45 PM
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#19
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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A little OT but I was wondering if I could put one of those in, just like that, under the dash for a kill switch so the car won't start?
__________________
33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
www.facebook.com/kb0177
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05-06-2010, 07:11 PM
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#20
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GL Member
Join Date: Aug 2008
Location: Kansas
Posts: 884
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Quote:
Originally Posted by Redog
A little OT but I was wondering if I could put one of those in, just like that, under the dash for a kill switch so the car won't start?
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Yep you can, I'm going to put in a fuel pump relay switch hidden in my car.
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2002 Oldsmobile Alero GL 1990 Nissan 300zx n/a 1991 Nissan 300zx TT
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