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I am trying to make my own ti link/parallel, with a female stereo port, and parallel port on the other side. I don't know what I am to do with the jack. I have three wires: gold, white and red, which I have to connect to the jack, according to:

This schema (no colors)

enter image description here

And this one with wire colors (fr ; rouge = red, or = gold, blanc = white) :

enter image description here

The problem is : my jack has 3 connections: one is longer (B) the second at its right is round (A) and the third rectangular-shaped at its left (C).

enter image description here

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Please speak simply because I am a noob in electronics and my English is not very good, thanks.

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  • \$\begingroup\$ What is being asked here? Do you want to know the pinout of the plug's solder terminals relative to the tip/ring/sleeve of the plug itself? You can easily figure out the mapping by testing for electrical continuity between the sections of the plug, and the solder terminals!!! Are you serious? \$\endgroup\$ – Kaz Oct 28 '13 at 23:04
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    \$\begingroup\$ Easily figured out with an ohm meter testing between the solder terminals and the tip/sleeve parts of the connector. "Piece of cake". \$\endgroup\$ – Michael Karas Oct 28 '13 at 23:14
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Simplest solution is to get a multimeter and start poking around.

The three terminals are called tip, ring, and sleeve - tip on the end, ring in the middle, and sleeve closest to the connector.

First, you want to check the link cable to see which pins are connected to which. Get a multimeter and measure the resistance between the contacts at one end and the contacts at the other end, one pair at a time. You want to see if the cable is 1:1 (tip to tip, ring to ring, etc.) or if anything is swapped around. Then put the unknown connector on one end of the cable and use the multimeter again to figure out which of those metal tabs corresponds to which of the terminals.

I'll give you a freebie: that tab you marked B likely connects to the sleeve. You'll have to check the other two yourself.

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Just want to make it clear from the start that this is definitely the correct answer.

But just in case someone stumbles across this question while trying to solve the same problem by googling (because they don't have a multimeter), here's what I found, and it was confirmed by experimentation.

The shortest one (A) - Tip (Left audio channel)

The longer one (C) - Ring (Right audo channel)

The long one (B) - Sleeve

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  • \$\begingroup\$ Were the tip and ring connectors also rounded and squared off, respectively, in the connector you used? \$\endgroup\$ – Andrew Morton Nov 22 '18 at 19:34
  • \$\begingroup\$ Yes, they were. But I did forget to mention that I soldered a 3.5 mm jack, not a 2.5 \$\endgroup\$ – forgot_my_login Nov 22 '18 at 20:10

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