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Re: battery kill switch diagram
[Re: 67dodge67]
#1647055
07/15/14 10:38 PM
07/15/14 10:38 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Hello all,
Been a long time since I've been here, just been busy as usual. Quick question. Have a trunk mounted battery. Need to install a kill switch for it. I currently have one with only the two hot leads on it, not the type that has the two hot leads and the jumpers, I guess they are called. Can I use the one I have and if so, a diagram how to wire it in? Thanks in advance,
Dave
I will assume you run a alt.. but you run 1 HOT lead
from the + on the battery to one side of the master
then from the other side of the master to the starter....
if you run a alt you run the big output off the alt
to the back and hook it up on the battery side of
the master... this is the simplest way to hook it
up but there are other ways with relays and such ..
sorry I dont have a diagram
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Re: battery kill switch diagram
[Re: Bigcube]
#1647057
07/16/14 09:57 PM
07/16/14 09:57 PM
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Joined: Aug 2005
Posts: 989
WI, USA
67dodge67
OP
mopar addict
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OP
mopar addict
Joined: Aug 2005
Posts: 989
WI, USA
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Quote:
I use a continuous duty relay in mine to kill alternator when the switch is off.
Did exactly what you show here, checked it twice as well... hit the switch and it remained running. Not sure where to go from here... bottom line is I need to have it work before I go to the track; yep tech said ya gotta have one with a trunk mounted battery. Nothing has changed (factory wiring harness, etc.) from day one when I got the car. Will see what I can find for info, greatly appreciate your help here.
Dave
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Re: battery kill switch diagram
[Re: 67dodge67]
#1647059
07/16/14 10:04 PM
07/16/14 10:04 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Disconnect the alt wire from the alt then flip the master off.. see if it dies then... but your picking up power from the alt... thats why I hook the alt wire up to the battery side of the master.. nothing to go wrong... just to test the master unplug the field wires at the alt(does the same thing as un bolting the output wire
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Re: battery kill switch diagram
[Re: Bigcube]
#1647061
07/16/14 10:27 PM
07/16/14 10:27 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
The only thing about doing it that way Mike if the alternator wire is hot all the time. With a solenoid the power to the alternator is dead when the switch is off.
The alt is hot all the time in a production car.. no
big deal
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Re: battery kill switch diagram
[Re: MR_P_BODY]
#1647064
07/16/14 11:39 PM
07/16/14 11:39 PM
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Joined: Aug 2005
Posts: 989
WI, USA
67dodge67
OP
mopar addict
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OP
mopar addict
Joined: Aug 2005
Posts: 989
WI, USA
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Quote:
Disconnect the alt wire from the alt then flip the
master off.. see if it dies then... but your picking
up power from the alt... thats why I hook the alt wire
up to the battery side of the master.. nothing to go
wrong... just to test the master unplug the field wires
at the alt(does the same thing as un bolting the output wire
Quick reply... disconnected the wire from the alt (no longer have the relay hooked up as shown in the diagram above) did not die, kept running. Scratching head there... but again, will wait till tomorrow to pick up where I left off.... more help is always greatly appreciated. Thanks again,
Dave
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Re: battery kill switch diagram
[Re: 67dodge67]
#1647065
07/17/14 12:06 AM
07/17/14 12:06 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Disconnect the alt wire from the alt then flip the
master off.. see if it dies then... but your picking
up power from the alt... thats why I hook the alt wire
up to the battery side of the master.. nothing to go
wrong... just to test the master unplug the field wires
at the alt(does the same thing as un bolting the output wire
Quick reply... disconnected the wire from the alt (no longer have the relay hooked up as shown in the diagram above) did not die, kept running. Scratching head there... but again, will wait till tomorrow to pick up where I left off.... more help is always greatly appreciated. Thanks again,
Dave
Use a ohm meter and check the master to make sure
it goes open when it shut off
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Re: battery kill switch diagram
[Re: 67dodge67]
#1647069
07/17/14 09:03 AM
07/17/14 09:03 AM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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This has always kind of amazed me. NHRA wants the positive wire switched, when the most effective/easiest way, is to put the switch on the negative wire. One wire, one master switch and you're done. When the negative side is open= no current flow= nothing works/runs.
If you like drag racing, support your local track.
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Re: battery kill switch diagram
[Re: Bad340fish]
#1647072
07/17/14 04:08 PM
07/17/14 04:08 PM
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Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
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Quote:
Quote:
I use a continuous duty relay in mine to kill alternator when the switch is off.
I did this with mine and it works great. However I need to somehow wire my relay to key on power otherwise it drains the battery if I leave the kill switch on.
Correct. On a race car where you come back to the pits and throw the switch off, wiring as shown above is fine.
You throw the switch on a car with a ford relay and alt line CD relay, nothing is hot outside a 2 foot or so cube in most cases.
Wiring does get a little busy, but, my car isn't burning to the ground because an alt line is hot all the time. Seen it happen, no thanks.
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Re: battery kill switch diagram
[Re: b1dartsport]
#1647073
07/18/14 12:39 AM
07/18/14 12:39 AM
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Joined: Apr 2014
Posts: 108
Socal
littleVAL
member
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member
Joined: Apr 2014
Posts: 108
Socal
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If you don't like the charge line hot all the time you can use a large diode or wire direct to the battery and put a solenoid that is activated by voltage after the kill switch so when you turn off kill switch it kills solenoid and with it wired to the battery there will be no charge voltage to keep it alive. The reason the disconnect is on the positive instead of negative side is some alt. will full field and fry things when you remove negative. You can do the same thing on the ground side to by putting the ground through a solenoid and activating it on the output side of the disconnect the same way as the charge line you just need to get a solenoid that has two wires so you can run the other side to the battery side ground or it will not turn back on. I used to do rv repair they do all kind of disconnects and charge diodes on them. I just realized that big cube put a diagram that shows it perfectly.
Last edited by littleVAL; 07/18/14 12:47 AM.
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Thanks, Dave
![8210909-5951869-4736049-Mopar%2520wiring%2520diagram[1].jpg](/ubbthreads/ubbthreads.php/ubb/download/Number/169169/filename/8210909-5951869-4736049-Mopar%2520wiring%2520diagram[1].jpg){kind=link}