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switch on positive or negative?

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lightsareout

Joined: Jan 03 2005
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Post Sat Feb 12, 2005 3:52 pm

which is right, putting your switches on the positive or negative side of a light?
cardinalsfan

Joined: Jan 08 2005
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Post Sat Feb 12, 2005 3:53 pm

positive....and im positive about that answer
Ryan88

Joined: Aug 09 2004
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Post Sat Feb 12, 2005 4:23 pm

cardinalsfan wrote:
positive....and im positive about that answer


[snare, snare, bass drum + crash] [/]
GlowinPontiac

Joined: Mar 04 2004
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Post Sun Feb 13, 2005 7:12 pm

heh yeah put the switch and fuse on the positive side.
lightsareout

Joined: Jan 03 2005
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Post Sun Feb 13, 2005 7:28 pm

i'm asking becuase i asked the electrical guys on my grand prix forum and they said negative, but that didn't sound right, i will trust you guys more than i trust them when it comes to electronics
alienyoungjr

Joined: Apr 30 2004
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Post Sun Feb 13, 2005 7:30 pm

truly you can put the switch on either wire but wouldn't you rather have a powersurge stop at the switch and fuse or would you like the surge to go through the most important electronics before being stopped by the fuse and switch.
lightsareout

Joined: Jan 03 2005
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Post Sun Feb 13, 2005 7:39 pm

so does it go positive, switch, fuse, elctronics, ground?

correct me if i'm wrong
alienyoungjr

Joined: Apr 30 2004
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Post Sun Feb 13, 2005 7:45 pm

lightsareout wrote:
so does it go positive, switch, fuse, elctronics, ground?

correct me if i'm wrong


close but i would put:

positive, fuse, switch, electronics, ground.
GlowinPontiac

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Post Sun Feb 13, 2005 8:45 pm

check the how to and diagrams section and look at the wiring diagrams to see it in aciton.
Moss

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Post Sun Feb 13, 2005 8:46 pm

Why would you ask Pontiac guys any ways?

PsSt. What do they know. icon_rolleyes.gif

icon_cool.gif
alienyoungjr

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Post Sun Feb 13, 2005 8:48 pm

Moss wrote:
Why would you ask Pontiac guys any ways?

PsSt. What do they know. icon_rolleyes.gif

icon_cool.gif


well obvioudly they know how to break things.
GlowinPontiac

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Post Sun Feb 13, 2005 9:15 pm

wow those people on the grand prix forum must go through a lot of burned up electronics.
jethawk

Joined: Jul 07 2004
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Post Sun Feb 13, 2005 9:35 pm

you can put it on either.... all the switch really does is completes... or disrupts the circuit.... aslong as you have a fuse on the positive wire... with the correct amp rating fuse... then everything will work fine and dandy
king_midas

Joined: May 25 2004
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Post Sun Feb 13, 2005 11:40 pm

^^^ oh thank god... I have the negative switched on EVERYTHING in my car. it's a lot easier, all I do is run all the switches straight to the same ground point. all the positice wires go from the battery to a few fuseblocks in the glove box, then to the electronics.
jol102001

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Post Sun Feb 13, 2005 11:58 pm

jethawk wrote:
you can put it on either.... all the switch really does is completes... or disrupts the circuit.... aslong as you have a fuse on the positive wire... with the correct amp rating fuse... then everything will work fine and dandy


thats true... but you will always have electricity running to your equipment... it could damage it?!
jethawk

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Post Mon Feb 14, 2005 12:05 am

if its not grounded... how is the electricity going to complete the circuit.....the switch on the negative side.. is basically turning the ground on and off instead of the power on and off.... but the electricity wouldnt be constently running to your equipment... because it has nowhere to go.. without a ground......
jol102001

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Post Mon Feb 14, 2005 12:26 am

Right, but are you sure that nothing will happen to it? It doesn't hurt the equipment when its turned off but the electricity is running to it??

mav and addicted would know more about this
alienyoungjr

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Post Mon Feb 14, 2005 11:02 am

just put the switch on the positive wire, its the safest you posible can get, the reason you don't want constant power to any device is to keep control of it shorting out to only when you are in the vehicle and you turned it on. If you leave the power on 24/7 then the electronics could short out whenever it feels like it and you wont have a clue except your car is being put out by the fire department.
Exaran

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Post Tue Feb 15, 2005 3:54 pm

switching the negitive will NOT harm the electronics, and there wont be any electricity going to them. The positive terminal is NOT a source of electricity. You get electricity when it flows from one side of a battery to the other, it needs the whole complete circuit or it wont do anything.

You only want to put the switch on the positive side for saftey. Your car is a "negative ground" vehicle, meaning that the body of the car is connected to the negative terminal of the battery. (you can have a positive ground vehicle, some tractors are)

So, that means that every piece of body metal acts as a connection to the negative side of the battery. This can be good and bad... good because you only have to run a positive wire from the battery, and you can use the car itself as the negative wire.... bad because if a positive wire rubs against any part of the body it can cause a short, which can lead to fire and all kinds of nasty stuff.

So if you put the switch on the positive side, and you get a short after the switch, you can just turn it off.

The other advantage is that if you put your switch on the negative side, and you get a short before the switch your electronics will turn on by themselves!

....But if there are no shorts, switching on either side is fine
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