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Re: battery kill switch diagram [Re: littleVAL] #1647074
07/18/14 01:55 AM
07/18/14 01:55 AM
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Romeo MI
MR_P_BODY Offline
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Quote:

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.




If you are really worried about it being hot you
can put a 100 amp fuse at each end of the alt output
lead... how many times have you EVER HEARD of that
line shorting out... every production car is hot..
I dont waste my time with all those added things
that can fail and leave you hanging

Re: battery kill switch diagram [Re: MR_P_BODY] #1647075
07/18/14 02:33 AM
07/18/14 02:33 AM
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Socal
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littleVAL Offline
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Actually a fuse is the best set up lite weight and no moving parts and if you are concerned about blowing it you can always use a manual or auto resettable fuse.

Re: battery kill switch diagram [Re: littleVAL] #1647076
07/20/14 02:21 AM
07/20/14 02:21 AM
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67dodge67 Offline OP
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Hi All,

So me and a bud of mine tried to figure out what's going on here and we made some headway, but are still a little stumped. We've called it a night and will try again tomorrow, but here's a pic of how my alt is wired up with info id'ing the wires. We went from testing the kill switch to making sure grounds were good to making sure all the wiring was secure. We are now thinking there might be something messed up on the dash side of the bulkhead, but wanted to see what input we'd get before going further. In the image, I id'ed the wired coming to/from the alt and hope to get some input. Again, I thank everyone for their assistance.

Dave

8213927-altwiring.jpg (144 downloads)
Re: battery kill switch diagram [Re: 67dodge67] #1647077
07/20/14 02:26 AM
07/20/14 02:26 AM
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67dodge67 Offline OP
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We did try B1dartsport's first image posted to have it wired up without using a relay, but had no luck. Went thru the wiring a few times to be sure it was as illustrated... still no go. That's why I put the image of how my alt is wired on here in hopes to get some feed back. Thanks again, I do appreciate it.

Dave

Re: battery kill switch diagram [Re: 67dodge67] #1647078
07/20/14 02:31 AM
07/20/14 02:31 AM
Joined: Jun 2003
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Romeo MI
MR_P_BODY Offline
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Quote:

Hi All,

So me and a bud of mine tried to figure out what's going on here and we made some headway, but are still a little stumped. We've called it a night and will try again tomorrow, but here's a pic of how my alt is wired up with info id'ing the wires. We went from testing the kill switch to making sure grounds were good to making sure all the wiring was secure. We are now thinking there might be something messed up on the dash side of the bulkhead, but wanted to see what input we'd get before going further. In the image, I id'ed the wired coming to/from the alt and hope to get some input. Again, I thank everyone for their assistance.

Dave




You CANT run the alt wire to the ignition (from the alt)
that will be hot all the time the alt is turning
EDIT
The lead you show going from the alt to the starter
is wrong... that lead HAS to go back to the batt side
of the master.. the black lead you have CANT go to
go to the ignition or any point of the ignition..
you have to have the alt go to the batt side of the
master... then run a lead forward to the start or
a junction then to the starter... the junction will
be where you pull power from for the ignition or ANYTHING
else

Last edited by MR_P_BODY; 07/20/14 02:43 AM.
Re: battery kill switch diagram [Re: 67dodge67] #1647079
07/20/14 02:48 AM
07/20/14 02:48 AM
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Canton, Ohio
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Sport440 Offline
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Remove that ignition /bulkhead feed from the alt and feed it from the shut off relay side thats only energized when the kill switch is in the on position. Bigcubes diagram is the simplest one to use.

Re: battery kill switch diagram [Re: 67dodge67] #1647080
07/20/14 02:54 AM
07/20/14 02:54 AM
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Sport440 Offline
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Quote:

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






As shown put your Alt wire to the relay, and put your ignition /bulk head feed at the Moroso cutoff switch feed.

Get the ignition feed off the alt output and feed it from the Moroso cut off switch as in BigCubes diagram. Then your good to go.

Re: battery kill switch diagram [Re: MR_P_BODY] #1647081
07/20/14 04:07 AM
07/20/14 04:07 AM
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Sport440 Offline
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Mike, the positive post at the starter is hot, straight from the bat/cutoff switch when on, so I can see why the alt output is ran there.

EDIT, the above is incorrect. The Alt output needs to go to the Dead side of the rely as in BigCubes Diagram.

Last edited by Sport440; 07/20/14 12:45 PM.
Re: battery kill switch diagram [Re: Sport440] #1647082
07/20/14 11:17 AM
07/20/14 11:17 AM
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Romeo MI
MR_P_BODY Offline
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Quote:

Mike, the positive post at the starter is hot, straight from the bat/cutoff switch when on, so I can see why the alt output is ran there.




The big (red) alt wire has to be on the battery side
of the master.. if it goes to the starter the alt is
supplying power when the master is off... the black
lead he has is also a problem.. it will supply power
to the ignition

Re: battery kill switch diagram [Re: MR_P_BODY] #1647083
07/20/14 12:48 PM
07/20/14 12:48 PM
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Canton, Ohio
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Sport440 Offline
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Your right, I corrected that 2.00 am post. My prior posts before that were correct.

Re: battery kill switch diagram [Re: Sport440] #1647084
07/20/14 09:23 PM
07/20/14 09:23 PM
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67dodge67 Offline OP
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Thanks for all the replies, I appreciate it. I should have been more clear with my picture I posted... that is the original wiring on the car, hence the reason why my kill switch doesn't work correctly. We tried dartsport's diagram a couple times, checked it over and said lets just put it back to how it was to have a beginning point today. After reading the recent posts, I will now go back and see what happens. Thank you all for your input and information

Dave

Last edited by 67dodge67; 07/20/14 09:26 PM.
Re: battery kill switch diagram [Re: 67dodge67] #1647085
07/23/14 02:13 AM
07/23/14 02:13 AM
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67dodge67 Offline OP
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Hi all,

Got it all sorted out and all is good. Kill switch works mint! Used the image from bigcube and had to do a few things different due to what was done to the car previously... didn't find that out until digging deeper into it... but she's wired up correctly, everything shuts off when the master is thrown, all is good!
Thanks again to all who chimed in and helped! Thanks!!

Dave

Re: battery kill switch diagram [Re: 67dodge67] #2602501
01/06/19 05:31 PM
01/06/19 05:31 PM
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S.E. Michigan
TruPerformance Offline
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Can any tell me what do you run on the small lug of the relay in Bigcube’s diagram?
The rest is clear, and I am in process of doing this, I just don’t see why I need another wire from the small lug? Any help is appreciated!


1963 Belvedere (mine)
1969 Roadrunner (wife's)
Re: battery kill switch diagram [Re: TruPerformance] #2602516
01/06/19 06:10 PM
01/06/19 06:10 PM
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Originally Posted By TruPerformance
Can any tell me what do you run on the small lug of the relay in Bigcube’s diagram?
The rest is clear, and I am in process of doing this, I just don’t see why I need another wire from the small lug? Any help is appreciated!


I only see one small wire, unless there is another diagram somewhere. The one wire triggers the relay when the kill switch is turned on. This way the wire to the alternator is only hot when the kill switch is on.

Re: battery kill switch diagram [Re: justinp61] #2602525
01/06/19 06:24 PM
01/06/19 06:24 PM
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On the diagram and my solenoid also, there are three lugs. One side is the power from the master disconnect, the other large lug is where you run the alternator wire to. But the diagram shows a line to the third small lug and ties it to “power to car”. Just not sure if I need to do anything with that small lug? Seems like it is not necessary?


1963 Belvedere (mine)
1969 Roadrunner (wife's)
Re: battery kill switch diagram [Re: TruPerformance] #2602530
01/06/19 06:36 PM
01/06/19 06:36 PM
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Without power to the small lug the solenoid won't close and complete the alternator circuit.

With the switch ON, power from the ON side of the switch supplies power to energize the solenoid and complete the alternator circuit; with the switch OFF the solenoid is de-energized and the alternator output is removed from the system.

This prevents the alternator from supplying power to the car and defeating the purpose of the kill switch.


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Re: battery kill switch diagram [Re: John_Kunkel] #2602535
01/06/19 06:45 PM
01/06/19 06:45 PM
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S.E. Michigan
TruPerformance Offline
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OK, I thought the solenoid would open when the disconnect switch was turned on, since it supplied power to the main lug opposite the alternator wire. So, you’re saying this just needs power from the disconnect, not to wire to the front of the car? That is different than the diagram.
Appreciate the help folks!


1963 Belvedere (mine)
1969 Roadrunner (wife's)
Re: battery kill switch diagram [Re: 67dodge67] #2602589
01/06/19 08:50 PM
01/06/19 08:50 PM
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Actually the power supplied to the main lug opposite the alternator lug comes from the battery. The alternator does charge through that lug and back to the battery though.

I ran that small wire from a "key on" source in my dash to a small relay in the back to power "on" the solenoid. This way my alternator wire to the front is only hot when the key is on.

Re: battery kill switch diagram [Re: 67dodge67] #2602844
01/07/19 12:17 PM
01/07/19 12:17 PM
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S.E. Michigan
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It makes complete sense now!!! I got a couple wiring changes to clean up under the hood now and I’ll be all set.
I like the idea of using a key’ed source to power the solenoid.
Appreciate the help!!!


1963 Belvedere (mine)
1969 Roadrunner (wife's)
Re: battery kill switch diagram [Re: 67dodge67] #2602943
01/07/19 02:40 PM
01/07/19 02:40 PM
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I use 75 amp relay and 100 amp C/B for all power
Alt is not hot without the car running needs oil pressure.


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