Battery main switch question

Old 02-17-2010, 04:25 PM
  #11  
fla1976
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http://www.kitcarmag.com/howto/cutof...all/index.html
http://summitracing.custhelp.com/ci/...110/1020353780
http://summitracing.custhelp.com/ci/...111/1020354217
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Old 02-17-2010, 05:27 PM
  #12  
THERATTLER
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the whole idea is that the alt. wire not be hooked to batt or starter side of switch in OFF position, an ohm meter will tell you right quick which small termanal that would be...jmo
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Old 02-18-2010, 04:05 AM
  #13  
TS1955
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Originally Posted by DrivingMissDD
Wouldn't that be the same as using the big posts in the same way ? That's how I have it wired now, but when I turn off the master, it does NOT kill the engine as required by most sanctioning bodies..
Wire it to the big post of the switch on the SAME side your battery is cable is wired.

TS1955
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Old 02-18-2010, 05:25 AM
  #14  
suicidebomb
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Originally Posted by TS1955
Originally Posted by DrivingMissDD
Wouldn't that be the same as using the big posts in the same way ? That's how I have it wired now, but when I turn off the master, it does NOT kill the engine as required by most sanctioning bodies..
Wire it to the big post of the switch on the SAME side your battery is cable is wired.

TS1955
There you go, now wire the hot wire to your ignition, through the switch on the small terminals. When you turn off the switch, all electrical power is dead. Only thing I'd do different, is I'd put the Alt. wire on the opposite side of the switch, as TS1955, but his way will work fine too.
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Old 02-18-2010, 06:01 PM
  #15  
fla1976
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You have to break the connection to the alternator. When you disconnect the battery with the switch, the engine will stay running because it is running off the alternator. It is the same as disconnecting a battery with the engine running, the engine runs off the alternator. That is why you break the circuit to the alternator. Try it by using the battery switch and when it stays running, disconnect the alternator wire. The engine will then die.
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Old 02-20-2010, 07:58 AM
  #16  
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I really appreciate all the input guys !
It is just a matter on common sense once I 'thought' about it !????????
Sometimes 'things' just don't compute as easily as they once did :shock: :shock: ops: ops: ops: ops: ops:
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Old 03-02-2010, 08:42 AM
  #17  
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The absolute best way to wire a one wire alternator is through a 4 post master kill switch....this reducess the number of connections (compared to using a large solenoid) and isolates all power from the vehicle. If you have a 4 post switch that has 2 large post and 2 smaller, I'll bet money that switch isn't capable of handling the amperage. If you research it...the smaller posts are only rated fro 20 amps continous. Cole Hersee 75912 is the switch needed... If you do not decide to use a 4 post...wire the alternator directly to the battery...do not terminate it to the battery side of the kill switch. The battery acts as a filter and reduces the chances of the alternator inducing noise.

Jeff Brandenburg
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Old 03-02-2010, 09:20 AM
  #18  
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I appreciate the info !
I certainly don't have to worry about noise interference as it's a full tilt boogie race car with unrestricted 3" from collector to rear bumper. :shock:
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Old 03-02-2010, 10:18 AM
  #19  
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Welcome Jeff.
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Old 03-02-2010, 02:36 PM
  #20  
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Originally Posted by doorracer
Welcome Jeff.
Thanks! Don't know why I never thought to look through the junks forum...LOL
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