MPJA Panel Indicator LED Brightness?
 

I know there are several people using these LED panel indicators. Are they bright enough to be seen in direct sun light? Price is certainly right!

https://www.mpja.com/prodinfo.asp?number=16969+LE

Thanks
Alan Jackson
Hartselle, AL

Hi Alan,

I've been using them foe several years, and they are plenty bright. Even in diect sun, you can tell the difference between "on" and "off". Make sue to build a dimmer circuit, or you might not like them at night....;)

Paul

Ditto
 

I'll piggyback on what Paul said... I think they're plenty bright. They are defintely not super-bright like some of the LED annunciator lights I've seen on people's panels, but they're just fine for me.

And yep, a dimmer is essential. I ran the ganged ground leads through a potentiometer -- works great.

Putting Labels on the MJ LED lamps
 

By the way, you can easily add labels to these units if you like. Use a sharp knife point to pry out the colored part (alternate side to side until it's loose) and a milky white insert.

Use your computer to print on clear labels (I use Avery, but any will do). You can get two lines 4 or 5 characters each in Arial 10 font.

Peel the label off and hold it up to a window and with the light behind it, you will be able to center everything. If you miss, peel it off and try again. Use a razorblade to trim the excess and put the insert and colored lens back in the lamp and you're done. This saves the requirment to add separate labels to the lamps.

Nope
 

FWIW Alan, I used them for a couple of flights and then round filed them. I replaced them with an indicator from spruce that uses an incandescent bulb, much better.

Evidently some of the guys on this list are CATS, they can see anything, in any light!!! :D

A picture is worth a thousand words
 

Here's my panel with MJ LED lights on the annunciator panel in the top center. In the picture, the amber "Master Caution" lamp is lit, all others are off.

Or you can use...
 

...a cheap label maker with a black text on a clear background tape.

Same effect as mentioned above, and gives professional looking results. I prefer bigger letters and less text...:)

I have these installed in my RV-10. Four of them:
ALT
ENG
DOOR
DOOR

I actually do find them bright enough during the day. The DOOR warning lights are wired as per Van's instruction, except I ran the power lead through a micro switch on the throttle quadrant. This allows for taxiing with the doors open without the lights being illuminated, so I don't get used to a red light and take off without the doors secured. :) Once power is advanced the lights come on if the doors are not secured.
I also used the clear plastic label maker tape with bold black lettering, and am very pleased with the results.

Vic

Are these things really 10 x 14mm total? that seems pretty tiny to put words on, maybe not...

I do see that they also offer them in 12 x 16mm.

Which are you guys using?

MPJA LEDS
 

Im using them and to me they could be brighter, but my main complaint is they are not lasting. I keep replacing them and its getting old. Looking for a god replacement that will keep the same hole centers