larrynimmo Posted April 9, 2020 Report Posted April 9, 2020 With the help and guidance of AI installed the whelen set pretty much wire for wire...when I turn on nav light, it works perfectly...when I turn on strobe...it work perfectly. When I have the master switch on, there is a very dim illumination of the red position light on the left wing, and the white position light....I also noticed that the GEAR SAFE light on the annunciator was dimly lit, like it would be once you turn on the nav lights.... I almost wonder if the original Mooney design used some sort of grounding backfeed through the nav lights to give it a dimming function switchover Quote
Steve W Posted April 9, 2020 Report Posted April 9, 2020 You are correct. It's described in the service manual I have in 24-39-06 pg 16. Depending on the model your A&P(if he understands electronics) should be able to put in a relay so 'CH1RET' goes to ground when the lights are off and +V when the nav lights are on without routing the signal through the lights. Quote
larrynimmo Posted April 9, 2020 Author Report Posted April 9, 2020 4 hours ago, Steve W said: You are correct. It's described in the service manual I have in 24-39-06 pg 16. Depending on the model your A&P(if he understands electronics) should be able to put in a relay so 'CH1RET' goes to ground when the lights are off and +V when the nav lights are on without routing the signal through the lights. ive studied the wiring diagram....what would you think if I put a nav light in the rear compartment (where the battery is) of the plane....that would give it a path to bleed down the back feed? Quote
Steve W Posted April 9, 2020 Report Posted April 9, 2020 31 minutes ago, larrynimmo said: ive studied the wiring diagram....what would you think if I put a nav light in the rear compartment (where the battery is) of the plane....that would give it a path to bleed down the back feed? I suspect one incandescent or halogen bulb on the nav light circuit would be enough to make the dimming circuit happy, but I'm not 100% sure on that. Quote
carusoam Posted April 10, 2020 Report Posted April 10, 2020 We have a near Whelen guy around here... @OSUAV8TER tech question about Whelen lights here... Got any tech resources for this one? Best regards, -a- Quote
OSUAV8TER Posted April 10, 2020 Report Posted April 10, 2020 8 hours ago, carusoam said: We have a near Whelen guy around here... @OSUAV8TER tech question about Whelen lights here... Got any tech resources for this one? Best regards, -a- I am no technical expert but I can connect with the right people if this issue persists. 1 Quote
KB4 Posted April 10, 2020 Report Posted April 10, 2020 On 4/9/2020 at 1:19 PM, larrynimmo said: I also noticed that the GEAR SAFE light on the annunciator was dimly lit, like it would be once you turn on the nav lights.... Gear Safe light did same for me, that's normal, but I didn't have the dim lit position light. IIRC my Whelen tail led did have the dim lit you describe. Quote
larrynimmo Posted April 14, 2020 Author Report Posted April 14, 2020 On 4/9/2020 at 1:41 PM, Steve W said: You are correct. It's described in the service manual I have in 24-39-06 pg 16. Depending on the model your A&P(if he understands electronics) should be able to put in a relay so 'CH1RET' goes to ground when the lights are off and +V when the nav lights are on without routing the signal through the lights. Yes....this worked exactly as you said....I traced out the wires and cut the wire from the nav switch to the third terminal (from pilot side) of the annunciator...installed a normally closed ground wire (and coil -), normally open (and coil +) to nav wire...common to the annunciator and it works exactly like it did before and no back fed leds. thank you 3 Quote
carusoam Posted October 19, 2022 Report Posted October 19, 2022 On 4/10/2020 at 10:09 AM, OSUAV8TER said: I am no technical expert but I can connect with the right people if this issue persists. This is the issue that pops up from time to time…. call it the ‘annunciator panel dimming function, based on position lights status, doesn’t work properly with LED position lights’… The result being… bright lights in the cabin during dark flights… Best regards, -a- Quote
OSUAV8TER Posted October 19, 2022 Report Posted October 19, 2022 8 hours ago, carusoam said: This is the issue that pops up from time to time…. call it the ‘annunciator panel dimming function, based on position lights status, doesn’t work properly with LED position lights’… The result being… bright lights in the cabin during dark flights… Best regards, -a- Thanks, I'm better tracking this now. I understand it is an issue and I'd like to have some documentation that shows how to manage it. Now I see I responded to this a while ago and it bubbled up again the other day, I'm dedicated to creating a repository of knowledge that documents how to manage this. 2 Quote
MisfitSELF Posted April 26, 2023 Report Posted April 26, 2023 On 4/13/2020 at 5:48 PM, larrynimmo said: Yes....this worked exactly as you said....I traced out the wires and cut the wire from the nav switch to the third terminal (from pilot side) of the annunciator...installed a normally closed ground wire (and coil -), normally open (and coil +) to nav wire...common to the annunciator and it works exactly like it did before and no back fed leds. thank you Any chance do you have pictures of your installation or part numbers of what you used? Quote
Pinecone Posted April 26, 2023 Report Posted April 26, 2023 There are other threads with info on how to deal with this issue. Quote
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