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  1. #1
    300+ Forum Addict Rodney's Avatar
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    Looking for manual/pinouts for Sperry SP-150

    Does anyone have or know where I could get the pinouts of the Sperry SP-150? My internet searches mostly pulled up FAA bulletins. Thanks in advance!
    Rodney -
    Real 727-200 pit
    Last Flown as N392PA
    FS9

  2. #2
    1000+ Poster - Fantastic Contributor Jackpilot's Avatar
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    Had same problem with a Delco Carousel unit...got the pinout from an Avionics repair Company here in Canada. U might try that trail down South...
    Merry Xmas Rod.
    Jackpilot
    B737-700 Posky
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    without PMSystem

  3. #3
    2000+ Poster - Never Leaves the Sim Michael Carter's Avatar
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    I searched a source for this too and found none.

    I found it much easier to just re-wire it to my needs and hook it up to the card. The multitude of pins on both connectors makes probing a very time consuming activity that could be better spent on just re-wiring the thing.

    Here's some photos of what I did with the SP-50, sorry some aren't too clear:









    Last edited by Michael Carter; 12-23-2008 at 11:16 PM.
    Boeing Skunk Works
    Remember...140, 250, and REALLY FAST!

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  4. #4
    300+ Forum Addict Rodney's Avatar
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    Thanks Michael,
    That is exactly what i am doing, reverse engineering it. Only switch position I haven't got yet is MAN G/S. I can't tell you why but the PO cut every wire inside the unit. Some right down to the connector. So that makes it difficult to see what interchanges with what. I'll get it though. I take it everything is electrically held. I have a 24VDC supply to test with, but from what I see on the switches they are AC.

    Thanks Jack,
    It never crossed my mind to check a local avionics shop.
    Rodney -
    Real 727-200 pit
    Last Flown as N392PA
    FS9

  5. #5
    2000+ Poster - Never Leaves the Sim Michael Carter's Avatar
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    Don't worry about the AC, they all work fine on 24VDC. It's a lot easier to probe the switches for continuity than try to go through the jacks. It's a nightmare in there as you probably already know, and some wiring goes out of the unit and back in. On some switches you'll never get continuity through the jacks because the other piece of equipment is missing and on the way back in it get's routed somewhere else!

    The first time you flip off the AP from the control yoke, you'll be grinning from ear to ear! I love that 'ka-chunk, whoop-whoop-whoop" sound as I'm setting up the approach or entering the STAR.
    Boeing Skunk Works
    Remember...140, 250, and REALLY FAST!

    We don't need no stinkin' ETOPS!



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