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Re: Moving Battery to trunk, do you have to have a shut
[Re: 67Satty]
#193335
01/17/09 11:32 AM
01/17/09 11:32 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:
OK, I've got a silly question. Why does moving the battery to the trunk position necessitate having a cut-off switch?
I can see that having a switch to shut off power is a good safety idea. So wouldn't it also be a good idea with the battery under the hood?
What is it about moving the battery back that makes it a rule to have the cutoff switch?
NHRA/IHRA rule. The factory doesnt see the need for
a master switch(cost and stupid people)they would
forget its there, plus now days alot of stuff is still
on the battery.. even when the ignition is off
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MR_P_BODY]
#193336
01/17/09 12:15 PM
01/17/09 12:15 PM
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Joined: Nov 2007
Posts: 21,814
Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,814
Kirkland, Washington
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Quote:
Quote:
OK, I've got a silly question. Why does moving the battery to the trunk position necessitate having a cut-off switch?
I can see that having a switch to shut off power is a good safety idea. So wouldn't it also be a good idea with the battery under the hood?
What is it about moving the battery back that makes it a rule to have the cutoff switch?
NHRA/IHRA rule. The factory doesnt see the need for
a master switch(cost and stupid people)they would
forget its there, plus now days alot of stuff is still
on the battery.. even when the ignition is off
I always figured it was a combination of:
1) By moving the batt to the trunk its not THAT difficult to require the switch while your at it and...
2) Most cars that reach this level of modification are now running an electric fuel pump, and thats the primarly goal of the switch--to stop fuel flow in the event of an accident, even though the motor may have already stopped.
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MR_P_BODY]
#193337
01/17/09 12:17 PM
01/17/09 12:17 PM
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Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD
master
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master
Joined: Jan 2003
Posts: 4,852
KENTUCKY
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Quote:
Funny how confusing and difficult some people can make something so easy
Whatever...........some of "us" need a bit of assistance..
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Re: Moving Battery to trunk, do you have to have a shut
[Re: 69CHARGERMD]
#193338
01/17/09 01:03 PM
01/17/09 01:03 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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You sure make your wiring complicated  My setup is Battery positive to cutoff switch, other side of cutoff switch to starter terminal stud with a jumper wire from the staerer terminal stud to the starter relay to where the battery power is normmaly connected. Obviously throwing the switch will not kill the engine, so my one wire solution was wiring an ignition kill circuit that goes from the ignition to ground through a normally closed microswitch mounted to the battery cutoff switch. I'm not sure this is 100% NHRA approved, but it has passed tech for years.
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MoparforLife]
#193339
01/17/09 01:14 PM
01/17/09 01:14 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:
Funny how confusing and difficult some people can make something so easy. 
Like Woody and I have both said. We prefer to not have any hot wires beyond the trunk.
Your way and the easier way leaves the hot to the alternator all the time... NO thanks! It might pass tech, but I prefer to be a bit safer.
My way takes one relay and one/two extra wires... I know that must be a pain and so difficult for some!
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MoparforLife]
#193344
01/17/09 02:42 PM
01/17/09 02:42 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:
Quote:
Funny how confusing and difficult some people can make something so easy.
Like Woody and I have both said. We prefer to not have any hot wires beyond the trunk.
Your way and the easier way leaves the hot to the alternator all the time... NO thanks! It might pass tech, but I prefer to be a bit safer.
My way takes one relay and one/two extra wires... I know that must be a pain and so difficult for some!
You have hot wires beyond the trunk. No way around it if your battery is in the trunk you have wires to it. relays, solenoids or not. It is you money. Support the parts people they need money too.
Not the way I do it you don't...
Once you throw the switch there's NOTHING hot beyond the trunk and the relays in the trunk.
I won't argue with you about this because you don't have a clue on this one.
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Re: Moving Battery to trunk, do you have to have a shut
[Re: RobX4406]
#193345
01/17/09 03:11 PM
01/17/09 03:11 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Quote:
Quote:
Quote:
Funny how confusing and difficult some people can make something so easy.
Like Woody and I have both said. We prefer to not have any hot wires beyond the trunk.
Your way and the easier way leaves the hot to the alternator all the time... NO thanks! It might pass tech, but I prefer to be a bit safer.
My way takes one relay and one/two extra wires... I know that must be a pain and so difficult for some!
You have hot wires beyond the trunk. No way around it if your battery is in the trunk you have wires to it. relays, solenoids or not. It is you money. Support the parts people they need money too.
Not the way I do it you don't...
Once you throw the switch there's NOTHING hot beyond the trunk and the relays in the trunk.
I won't argue with you about this because you don't have a clue on this one.
The HELL I don't we were wiring relays and solenoids into circle cars probably before you were born or even thought of for that matter. Don't tell me I don't have a clue on this. Just find it a waste. Throwing the main without all the bells and whistles kills the power too so whats the biggy? Anything live is wired to the off side. (Or should be) If you want to be so dam smart better rewire everything you have there is a Hell of a lot more live wiring (even with the switch off) than on your drivers than ever on the your race cars. I don't really car what you high $$$ guys do. There seems to be an endless supply of $$$ on this board. Many must have gotten in on the stimulus funding. 
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MoparforLife]
#193346
01/17/09 03:22 PM
01/17/09 03:22 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:
Quote:
Quote:
Quote:
Funny how confusing and difficult some people can make something so easy.
Like Woody and I have both said. We prefer to not have any hot wires beyond the trunk.
Your way and the easier way leaves the hot to the alternator all the time... NO thanks! It might pass tech, but I prefer to be a bit safer.
My way takes one relay and one/two extra wires... I know that must be a pain and so difficult for some!
You have hot wires beyond the trunk. No way around it if your battery is in the trunk you have wires to it. relays, solenoids or not. It is you money. Support the parts people they need money too.
Not the way I do it you don't...
Once you throw the switch there's NOTHING hot beyond the trunk and the relays in the trunk.
I won't argue with you about this because you don't have a clue on this one.
The HELL I don't we were wiring relays and solenoids into circle cars probably before you were born or even thought of for that matter. Don't tell me I don't have a clue on this. Just find it a waste. If you want to be so dam smart better rewire everything you have there is a Hell of a lot more live wiring (even with the switch off) than on your drivers than ever on the your race cars. I don't really car what you high $$$ guys do. There seems to be an endless supply of $$$ on this board. Many must have gotten in on the stimulus funding.
High dollar... 30-50 bucks. Yep that it's.
I don't care if you are old enough to have invented the wheel. Maybe you handcranked your first car?. No surprise some of the guy I know on this board, think what they do about you.
You don't know what you're talking about. When you throw the cutoff on my cars nothing is live outside the trunk and it's maybe a 2x3 area at that.
It's called alternatives. I take it you haven't thought about a constant hot wire to an alternator and a bad fuel leak. Been in a fire because of that smart guy?
You know everything so take that genius! 
I'm done.
Another to ignore... congrats
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MoparforLife]
#193347
01/17/09 03:27 PM
01/17/09 03:27 PM
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Joined: Aug 2005
Posts: 761
KY
juicedcuda
super stock
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super stock
Joined: Aug 2005
Posts: 761
KY
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why cant you just put the alternator wire on the side of the main kill switch going to the front of the car so that the alternator is killed when the switch is off?
1970 Plymouth 'Cuda
1970 Plum Crazy "Gold Duster"
1973 Gold Duster
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Re: Moving Battery to trunk, do you have to have a shut
[Re: juicedcuda]
#193348
01/17/09 03:32 PM
01/17/09 03:32 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:
why cant you just put the alternator wire on the side of the main kill switch going to the front of the car so that the alternator is killed when the switch is off?
If you put it on the side of the switch going to the front of the car, it won't cut off the power supply from the alternator. As long as the alternator is turning, energy is being supplied. The car will continue to run, just like when you have it running and pull the + battery terminal from a car, due to the charging system.
It has to be on the battery side of the switch.
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Re: Moving Battery to trunk, do you have to have a shut
[Re: juicedcuda]
#193350
01/17/09 03:42 PM
01/17/09 03:42 PM
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Joined: Jan 2003
Posts: 1,756
London, England
Gavin
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,756
London, England
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Quote:
why cant you just put the alternator wire on the side of the main kill switch going to the front of the car so that the alternator is killed when the switch is off?
Because although that would break the path between the battery and the alternator (thus stopping the alternator being hot when everything was switched off) it means that the alternator is directly wired to the rest of the vehicle wiring - so if you switch the disconnect with the engine running the alternator will still power everything and the engine won't cut out.....
EDIT - I need to refresh more often 
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Re: Moving Battery to trunk, do you have to have a shut
[Re: RobX4406]
#193351
01/17/09 03:57 PM
01/17/09 03:57 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
I take it you haven't thought about a constant hot wire to an alternator and a bad fuel leak. Been in a fire because of that smart guy?
Oh master electrical god, it is dead with the switch in the off position when wire it to the off side of the switch so it is only connected with the switch in the on position. Ever think of that oh brilliant one.
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Re: Moving Battery to trunk, do you have to have a shut
[Re: MoparforLife]
#193352
01/17/09 04:03 PM
01/17/09 04:03 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 take it you haven't thought about a constant hot wire to an alternator and a bad fuel leak. Been in a fire because of that smart guy?
Oh master electrical god, it is dead with the switch in the off position when wire it to the off side of the switch so it is only connected with the switch in the on position. Ever think of that oh brilliant one.
Want to think about that for a minute...
Just want to get this up so you can't change what you wrote.
That removes the other electrical source how? Battery one. Alternator the other...
Thanks for proving my point. see the post about 1-3 above...
After this doozy, maybe you should have stuck with your old handle!
You're on ignore now, so have fun.
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