A quick trick for verifying D-sub pinouts that saved me a headache

I keep seeing guys skip the pinout verification step on 37-pin connectors before they mate them, assuming the shell keying is enough. I caught a swapped power and ground pair on a G1000 LRU install last Tuesday because I always buzz out pins 1 and 20 first with a multimeter. Anyone have a faster method they like for this?

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3 Comments

karenc326mo ago

Can my method of just hoping really hard count?

8

jamie1016mo ago

Got a link to a good pinout cheat sheet? I just scribble numbers on tape but that's probably the slow way.

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hart.mark6mo ago

My own cheat sheet is just a blurry photo on my phone from 2018. Honestly @jamie101, the tape method might actually be faster than my system. I spent ten minutes last week looking for my "good" diagram before I just guessed on the wiring. There is a solid one over on the Adafruit learning system under basic connections. I should really print that thing instead of trusting my memory every single time.

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