Battery main switch question
 

Hey DD,
If I remember correctly, I believe you take a 10 gage wire from the back post of the alternator to the + side of the battery.

Chris

Through the switch. IOW from the alternator to the small post on the switch then from the other small post to the positive side of the battery. It just cuts the flow of power.

Curtis

You have it wired from large to large, or small to small?

Not necessarily. Depends on which side of the cutoff the alternator is hooked to. If it's attached to the battery side or to the pos batt post, the car will shut off but the alt wire will always be hot. If it's attached to the car side, the car will continue to run because the alternator is supplying the power. By the way, when this occurs, the alternator voltage will be unregulated and will go to 20+ volts when you turn off the switch.....ever been told you could test an alternator by unhooking the positive battery cable? That's why you shouldn't. It'll supply 20+ volts to the entire car if the alternator is working......

I'd think the small posts on the switch would be independent of the big posts on that kind of switch or you could use a relay
Johnny

The easiest way is to put the wire from the alternator through a heavy duty relay. The relay is deactivated when the switch is turned off and the alternator will stop putting out current.

i would say hook the alternator wire to the small post that is not common to either big post in the off position

Does anyone have a diagram of this. Sorry I gave some wrong info DD

http://www.kitcarmag.com/howto/cutof...all/index.html
http://summitracing.custhelp.com/ci/...110/1020353780
http://summitracing.custhelp.com/ci/...111/1020354217

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

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.

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.

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
Dykes & Strippers

Welcome Jeff.

Thanks! Don't know why I never thought to look through the junks forum...LOL

Ok ok...I'm a newb! LOL I'll let this www.dykesandstripperscustomwiring.com negotiate my assigned seat on the bus! LOL

Re
 

don`t have any idea.
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