Wiring a Single-Plug
RJ12 Telco Jack
Oops, we don't have the photos for these pages, but we'll post them
as soon as they're done.
Step
3 - Preparing a Single-Plug Female Throttle Jack
I'll explain the next steps using
a single-plug female RJ12 throttle jack. (Steps for a double-plug
female throttle jack follow.)
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Using a sharp utility knife, carefully
knick and strip about 6 inches of the outer plastic casing from an 18"
- 24" length of RJ12 flat cable.
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Trying to hold the cable in place
while you strip and solder these 6 fragile wires is next to impossible.
To provide some stablity to the operation, , we're going to temporarily
tape a small piece of scrap ¼" plywood that's about 1" wide and
3" - 4" long to the underside of the faceplate. Next we tape the
cable to the plywood so that it's flush with the top of the female plug.
We're now
ready to start fastening the wires under the screw lugs.
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Using a BBQ lighter, melt the plastic
coating off the white wire so that it will fit snug into the screw lug.
Don't use wire strippers as you'll snip some strands of wire.
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You've now exposed some very fragile
wires. Carefully twist the exposed copper strands on the white wire
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Flux and tin the exposed wire so
that you have a thick strand. You'll notice how the soldering iron
melts a bit more of the plastic and seals the wires into the plastic.
-
While the copper strands are very
fragile, notice how melting the plastic, rather than using wire-strippers,
has added back some of the stability.
-
You've now converted some fragile
wires into a more stable wire - but it's still fragile!
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Twist the tinned white wire around
the screw lug on the jack, making sure the white wire is aligned with the
white spade terminal. There should be a little slot in the plastic
base where the white spade terminal slides under the screw. The white
wire slides into this same slot.
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Tighten down the screw, making sure
the white wire slides into the same slot as the white spade terminal.
If you don't keep the white wire aligned, you'll slice the wire in two
when you tighten the screw.
-
Snip any excess wire off with your
wire cutters.
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Repeat the above process for the
other 5 wires.
Here's some photos
of the above steps.
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Cable
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Cable Stripped
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Melting the Plastic
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Wire Exposed
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Wire Tinned
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Wire Under Screw
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The Completed Job
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Testing for Continuity
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Male Plug Crimped On
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Before we install
the single-plug throttle jack into the module, let's take a look at wiring
a double-plug female throttle jack. |