Cut into hot wire feeding lightbulb (the swithleg from opener), add
wire, then wire-nut these 3 wires together and use the newly added
wire to fire off a relay w/120v coil. Take hot wire feeding 3way
switch and tap off of it and use to feed n/o dry contacts of relay.
Switched side of relay contact now needs to go over to your other 3way
switch and double up with its outside lighting switch-leg. This
creates a parallel path so relay can turn lights on even if power
isn't comming through snap-switches (relay overrides 3ways).

On 3 Oct 2003 09:23:31 -0700, (Andrew) wrote:

I have a home wiring project that I need help with. Actually I need
to find a device that can control a light, using power from another
light socket, and still letting a light be in that socket.

Ok. I will explain.

I have a garage door opener with a light in it. I have 2 lights
outside my garage. The builder only installed 1 switch to these
lights, so the first thing is to put another switch in an easier
location to access. I can figure out the 2 way switch.

But I want for these outdoor lights to come on when the garage door
opener's light comes on, -ie when the opener is in motion. There is
no auxilary control for this on the opener, but I think this could be
accomplished by using the power to the garage door opener's light to
control power to the outdoor lights.

I would like for this feature to override the 2 light switches, so I
would want them connected in series.

Any ideas? Is there a device that could do this for me available on
the market? Or is one easy to build? I have moderate electrical
knowledge.

Thanks

I have a home wiring project that I need help with. Actually I need
to find a device that can control a light, using power from another
light socket, and still letting a light be in that socket.

using electricity to control electricity - sounds like a task for
a relay.

Ok. I will explain.

I have a garage door opener with a light in it. I have 2 lights
outside my garage. The builder only installed 1 switch to these
lights, so the first thing is to put another switch in an easier
location to access. I can figure out the 2 way switch.

. . . . . . .
lamp in . . --- mains powered relay
---------+-----~~~3||| . try an electrical
opener (X) . 3||| . wholesaler
---------+-----___3||| . - a place that supplies
. | . electricians
+----------_| -----------+
| . ~- . |
| . . . . . . . |
| |
| ____________ |
L--------+-___ \____--+-----+----+
\____________ (X) (X)
N---------------------------------------+----+
2-way switch setup outdoor lammps

in this way the the outside lamps will light when the opener light is on
or when the manual 2-way switch is on.


you'll need to open the opener and connect wires to the back of the lamp
socket and run them out of the opener and to the relay. these wires won't
carry a high current so lighting cable is fine.



Bye.
Jasen

On 3 Oct 2003 09:23:31 -0700, andrew_0812 @ hotmail.com (Andrew) wrote:
I have a home wiring project that I need help with.

On 19 Sep 2005 robnmikey @ netzero.com wrote:
Cut into hot wire feeding lightbulb

What's up with responding to posts that are 2 years old?
Are you bored? ..or don't you "get" Usenet?
..
..
In addition, post BELOW the post to which you are responding.
Feel free to trim that post;
there is rarely a need to repost ALL of it.