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LED Replacement for Whelen Model #70303 Light


Whelen 70303 Halogen Wingtip Forward Recognition Lights - LED replacement  

101 members have voted

  1. 1. Would you be interested in purchasing an LED replacement set (qty. 2) for your existing 70303 forward wingtip recognition lights?

    • Yes - 14 volt
      33
    • Yes - 28 volt
      61
    • No, not interested
      7
    • Undecided right now
      0


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15 hours ago, Fly Boomer said:

Not seeing info on what Mooney models/years/serial numbers?

If you go back to Page 3 in this thread and look for a post on March 31,2021 from PilotX you'll see the wingtip.

PilotX is showing a mod, not the new  bulb from Whelen, but you'll see what the wingtip and installation looks like.

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Whelen folks at Oshkosh said "very soon" on recognition lights and that the fastest way to get was from Gallagher since he is getting the first lights.... they are bright...IMG_4771.jpg.282b40bc28f6a470e327473e37da0ccd.jpgIMG_4770.jpg.241c65ffa1d54dc4ce9398fa1162a26f.jpg

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Feedback from WAT is that they will be much brighter than what was on display at Oshkosh. I am taking 10% deposits for the initial lights that will be coming out with delivery in Q4 of this year. When you order you will be added to my distribution communication email list with regular updates on its progress.

https://www.gallagheraviationllc.com/whelen-aircraft-lighting.html <-- order here 

Scroll down until you see this.

image.jpeg.3dd71834731d810328c59db6e5b57e64.jpeg

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  • 2 months later...
  • 2 weeks later...

Some new info for those of us wanting this LED replacement. I tested the voltage on the wires to the 70303. 24v! So, emailed Jeffery at Whelen. Evidently, some Mooneys have the resistor installed, some don’t. I suggest anyone in 28v airplanes to check voltage! If it’s 24v, then this replacement won’t work. I have an Orion 650 wingtip setup which must be 28v. Also, if you are going to replace your 70303 recognition light, they are offer it in 14v and 28v, which threw up the red flag for me! Hopefully, Whelen will have a 28v LED replacement, but we are a small market, so going back with a 70303. Bummer!

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38 minutes ago, Tmack201 said:

Evidently, some Mooneys have the resistor installed, some don’t.

And why can't you add the resistor if you don't currently have one???  

If some Mooneys do have it, then isn't it an approved thing?  Or does it even need to be?  Can't a A&P sign it off?  (Thinking that sounds like something that falls under their sign off.)

 

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I have an order in for these. Looks like I have a 7.5 ohm resistor in the recog light circuit based on the wiring diagram for 29-0131 through 29-0143. It looks to be two separate circuits. One for the left and one for the right, both energized via the recog light switch. Each side shows the 7.5 ohm resistor. I’m assuming that means it’ll measure 14v, but I’m not exactly sure how that math works. Interesting to hear that some have it and some don’t. I’d think it would be simple and legal to add as well, but I’m just a pilot.8a7a628ef1568f40ab925538a645b04d.jpg

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Interesting.  I'll have to check my voltage as I'm not sure...M20K Encore, MSM schematic (25-2001 thru 25-2012) looks like it has a resistor but not marked regarding specs.  28V system; but not sure the voltage on the recogs.  Where is the resistor located?  at the wing tip vs. accessible from inspection panel?  I have a set on pre-order from @OSUAV8TER.

image.png.8b42c8872ad23cb26a8d9bcec97afdc3.png

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I have an order in for these. Looks like I have a 7.5 ohm resistor in the recog light circuit based on the wiring diagram for 29-0131 through 29-0143. It looks to be two separate circuits. One for the left and one for the right, both energized via the recog light switch. Each side shows the 7.5 ohm resistor. I’m assuming that means it’ll measure 14v, but I’m not exactly sure how that math works. Interesting to hear that some have it and some don’t. I’d think it would be simple and legal to add as well, but I’m just a pilot.8a7a628ef1568f40ab925538a645b04d.jpg
Voltage Drop = Current (amps) X Resistance (ohms)

If you don't have the light hooked up, there is no current so it will read battery voltage.
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  • 3 weeks later...

@OSUAV8TER per Jeff Argersinger's message above, I saw a similar email response he sent to a friend, but this doesn't add up. If they are depending on the factory-installed 7.5 ohm resistor, it will only drop the voltage by about 1V because the current flow is much less. The new part states a current range of 0.12A - 0.16A:

0.12 amps * 7.5 ohms = 0.9V drop

0.16 amps * 7.5 ohms = 1.2V drop

Obviously that's not going to lower the voltage to 14V on a 28V system. But we can see how that resistor worked fine for the old 2A bulbs:

2 amps * 7.5 ohms = 15V drop

Whelen has electrical engineers who understand this much better than I do. But with their sales director telling people it'll work because of the factory-installed resistor, that just doesn't seem correct. Maybe something's lost in translation?

This other thread (linked below) mentions that the device has a transducer, and you also stated there that "there is a step down box to get it from 28V to 14V".

Do you have official confirmation that the device by itself, with whatever comes in the box, will be able to work with 28V? Or for those us of with the resistors, 27V? With the mixed messages, it seems to be in everyone's interest to make sure there's a clear statement from Whelen that the light will work with an input of close to 28V.

 

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