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N262TH(at)comcast.net
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 Posted: Mon Jan 02, 2012 3:26 pm Post subject: Narco AT-165 Transponder wiring question |
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I recently purchased a nice used Narco AT-165 transponder from a third party. Luckily, it came with a harness. Unfortunately, it did not come with installation instructions. The harness has a 23 pin connector on the transponder side and a 15 pin connector on the altitude reporter side. Three heavier wires (I believe 16 ga.) are cut to about 4 inches in length, coming out of the 23 pin connector. I am assuming these are the power leads, red (+14V), black (Grnd), and yellow (?). That's my question; what should this yellow wire attach to? It comes out of pin #12 on the connector. I can't seem to find any wiring instructions on the internet for this 23 pin transponder.
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swperk
Joined: 18 Feb 2010
Posts: 30
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| Posted: Mon Jan 02, 2012 3:59 pm Post subject: Narco AT-165 Transponder wiring question |
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Traditional avionics color coding makes the red wire power, the black wire ground, and the yellow wire the dimmer.
Here’s a link to the AT-165 installation manual. It says that pin 5 is +13.75 V input, pin 11 is the 14 V dimmer, and pin 12 is ground. Perhaps the yellow wire is going to pin 11 instead of pin 12? And I think it may be a 24-pin edge connector, with 12 pins on each side.
Hope this helps you get everything sorted out!
http://www.aeroelectric.com/Installation_Data/Narco/narco-at-165-install.pdf
From: owner-avionics-list-server(at)matronics.com [mailto:owner-avionics-list-server(at)matronics.com] On Behalf Of N262TH(at)comcast.net
Sent: Monday, January 02, 2012 3:24 PM
To: avionics-list(at)matronics.com
Subject: Narco AT-165 Transponder wiring question
I recently purchased a nice used Narco AT-165 transponder from a third party. Luckily, it came with a harness. Unfortunately, it did not come with installation instructions. The harness has a 23 pin connector on the transponder side and a 15 pin connector on the altitude reporter side. Three heavier wires (I believe 16 ga.) are cut to about 4 inches in length, coming out of the 23 pin connector. I am assuming these are the power leads, red (+14V), black (Grnd), and yellow (?). That's my question; what should this yellow wire attach to? It comes out of pin #12 on the connector. I can't seem to find any wiring instructions on the internet for this 23 pin transponder.
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Mon Jan 02, 2012 4:58 pm Post subject: Narco AT-165 Transponder wiring question |
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Narco did one thing right. All of their transponders use the same tray
and pin connections. So pinout for AT50 or 150 will work.
On 1/2/2012 4:23 PM, N262TH(at)comcast.net wrote:
| Quote: | I recently purchased a nice used Narco AT-165 transponder from a third
party. Luckily, it came with a harness. Unfortunately, it did not
come with installation instructions. The harness has a 23 pin
connector on the transponder side and a 15 pin connector on the
altitude reporter side. Three heavier wires (I believe 16 ga.) are
cut to about 4 inches in length, coming out of the 23 pin connector.
I am assuming these are the power leads, red (+14V), black (Grnd),
and yellow (?). That's my question; what should this yellow wire
attach to? It comes out of pin #12 on the connector. I can't seem to
find any wiring instructions on the internet for this 23 pin transponder.
*
*
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Kelly McMullen
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