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<!DOCTYPE html>
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<title>fritzm.github.io - PDP-11/45: Power Harness</title>
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<h1>PDP-11/45: Power Harness</h1>
Sun 17 April 2016
by <a class="url fn" href="https://fritzm.github.io/author/fritz-mueller.html">Fritz Mueller</a>
</div>
<div><p>The main bit I'm missing from the '11/45 is the power distribution harness; somewhere over the years this was
misplaced, or maybe I accidentally gave it away along with some excess '11/40 parts. In any case, I haven't
had any luck tracking one of these down (made extra difficult by the fact that my '11/45 is an early model
which requires a slightly different harness than more recent models), so I'll have to build one myself from
scratch.</p>
<p>Luckily the required harness is pretty well documented in the engineering print sets. The crimp pins are
standard Mate-n-Lok still in production. Some of the connectors are out of production, but they haven't been
too hard to track down.</p>
<p>Here are some pictures of the amassed wire of appropriate gauges and colors, connectors, crimp pins, and the
start of the harness build on the bench:</p>
<p><img src='/images/pdp11/harness-parts_thumbnail_tall.jpg' title='Wire, connectors, and crimp tool to get started on replacement power harness' onclick='pswipe("pdp11",22);'/>
<img src='/images/pdp11/harness-bench_thumbnail_tall.jpg' title='Partially completed replacement power harness' onclick='pswipe("pdp11",23);'/></p></div>
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