Press-To-Test Lamp

[Ron Gordon]

My Press-To-Test indicator light for my landing gear has three lugs on the
back for three separate wires. Can anyone explain the appropriate hookup for
these three lugs so that I'm sure to hookup the correct wire to each of the
lugs?
Thanks!

[Ron Natalie]

Ron Gordon wrote:
> My Press-To-Test indicator light for my landing gear has three lugs on the
> back for three separate wires. Can anyone explain the appropriate hookup for
> these three lugs so that I'm sure to hookup the correct wire to each of the
> lugs?
>
One goes to the + bus, one goes to ground, one goes to whatever switch
illuminates the light.

The Press to Test feature needs power to light the light.

[Dale Scroggins]

"Ron Gordon" > wrote in message
.. .
> My Press-To-Test indicator light for my landing gear has three lugs on the
> back for three separate wires. Can anyone explain the appropriate hookup
> for these three lugs so that I'm sure to hookup the correct wire to each
> of the lugs?
> Thanks!
>
If the lamp assembly you are using is an MS25041 type, the solder lugs are
numbered. If you have a metal airplane, or intend to use negative ground
busses at various locations in the airframe, then wire the lamp assembly as
follows:

Lug 1: +
Lug 2: to switch(es). If you are only using one gear-down indicator, wire
the switches in series, with the last switch having one lug connected to
ground. If you have two or three gear down indicators, connect lug 2 of
each to a SPST NO switch, and the other switch lug to ground.
Lug 3: to ground.

The lug numbers are normally stamped on the lugs, or nearby. If you cannot
read them, looking from the back, with the center lug (#1) on bottom, #2 is
on the left and #3 is on the right.

Hope this helps.

[Ron Gordon]

Very helpful! Thanks to both of you. -Ron

"Dale Scroggins" > wrote in message
t...
>
> "Ron Gordon" > wrote in message
> .. .
>> My Press-To-Test indicator light for my landing gear has three lugs on
>> the back for three separate wires. Can anyone explain the appropriate
>> hookup for these three lugs so that I'm sure to hookup the correct wire
>> to each of the lugs?
>> Thanks!
>>
> If the lamp assembly you are using is an MS25041 type, the solder lugs are
> numbered. If you have a metal airplane, or intend to use negative ground
> busses at various locations in the airframe, then wire the lamp assembly
> as
> follows:
>
> Lug 1: +
> Lug 2: to switch(es). If you are only using one gear-down indicator,
> wire
> the switches in series, with the last switch having one lug connected to
> ground. If you have two or three gear down indicators, connect lug 2 of
> each to a SPST NO switch, and the other switch lug to ground.
> Lug 3: to ground.
>
> The lug numbers are normally stamped on the lugs, or nearby. If you
> cannot
> read them, looking from the back, with the center lug (#1) on bottom, #2
> is
> on the left and #3 is on the right.
>
> Hope this helps.
>