Light switch

[Justin & Katy]

I'm putting a cargo area in my tear and i would like to be able to turn on the light from either side of the compartment. Is there such a thing as a 12v two way switch?

[absolutsnwbrdr]

check out this thread....

http://tnttt.com/viewtopic.php?t=25257

[absolutsnwbrdr]

^ btw... ignore the bickering in that thread I posted. Go with 2 SPDT (single pole-double throw) switches, and wire them as JoeG had indicated with his diagram.

[Cliffmeister2000]

^ btw... ignore the bickering in that thread I posted. Go with 2 SPDT (single pole-double throw) switches, and wire them as JoeG had indicated with his diagram.

Bickering? On this forum? Never happens! Justed heated debate between friends with differing viewpoints, opinions, and solutions.

[absolutsnwbrdr]

^ btw... ignore the bickering in that thread I posted. Go with 2 SPDT (single pole-double throw) switches, and wire them as JoeG had indicated with his diagram.

Bickering? On this forum? Never happens! Justed heated debate between friends with differing viewpoints, opinions, and solutions.

my bad!

[Justin & Katy]

Thanks a lot for the help!

[bobhenry]

This will not work !

your quick I was loading the pic to my album sorry

[Justin & Katy]

What won't work?

[absolutsnwbrdr]

um, thats the same diagram, except with red on it.

[bobhenry]

The little gray line in the switch is the wiper as you see the current has no where to go once it gets to the right side switch.

[Justin & Katy]

Wouldn't you just throw the switch on the other side to make it work?

[absolutsnwbrdr]

Its a simple diagram, not an electrical path chart... the wiper is assumed to be in the switch already. With 2 SPDT switches wired as shown (in either diagram), the lights will toggle on or off whenever EITHER switch is thrown to its opposite position.

[absolutsnwbrdr]

Wouldn't you just throw the switch on the other side to make it work?

Yes

[absolutsnwbrdr]

And heres how/why:

Let's say that Switch 1 is at the bottom of a stairway and Switch 2 is at the top. Suppose Switch 1 is in a 'down' position (B & C connected) and Switch 2 is in an 'up' position (D & E connected). The light bulb is off.

Now someone comes to the bottom of the stairs and flips Switch 1 'up'. If you follow the circuit you can see why the light bulb would now turn on because A & B and D & E are connected.

When the person reaches the top of the stairs, Switch 2 is flipped 'down', E & F are now connected and so the light bulb goes off.

Another person shows up at the bottom of the stairs and flips Switch 1 'down', connecting B & C thereby turning the light on again.

The person reaches the top of the stairs, flips Switch 2 'up' connecting D & E and the light bulb goes off.

Notice that in the case of the second person, a downstroke turns the bulb on and an upstroke turns the bulb off.

If you have such switches in your house OR if you have purchased household wall switches for this circuit, you now see the reason why they do NOT have the words on and off printed on them.

http://www.1728.com/project2.htm

[bobhenry]

OK OK I'll say it



DUH !