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Recent content by dfswan

  1. dfswan

    Boat side of Crusader harness RA121079 Male connector

    For Everyone's information, upon further research, (that is what happens when you can't solve a problem) My crusader uses a MEFI-4 ECM (Engine Control Module). After checking out the schematics the 9 wire is a Check Engine Light wire, that is not used in my Shamrock. The 10 wire is a Data wire...
  2. dfswan

    Boat side of Crusader harness RA121079 Male connector

    A schematic for the 5.7 Liter Crusader shows that the 9 pin isn't even used.
  3. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Thank you AllDodge!!! A little overwhelming, but great information.
  4. dfswan

    Boat side of Crusader harness RA121079 Male connector

    BTW, Good news is that the ECM model (MEFI-4) should be compatible with a gateway to make it compatible with NMEA 2000. That means all the functions of engine including fuel flow, and Fault Codes, that are not easily obtainable. That will be my next project if it is actually compatible. I'm...
  5. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Please exsuse my ignorance, but where did you get the ECM Manual? I can imagine that being very valuable.
  6. dfswan

    Boat side of Crusader harness RA121079 Male connector

    I would say you are correct, and I stand corrected. The Pin in-between the two large pins is missing on the MM Harness. It gets pretty confusing with the engine side (Femal) and the harness side (Male) Your diagram appears to be on the Engine side (Female) similar to the installation Manual...
  7. dfswan

    Boat side of Crusader harness RA121079 Male connector

    OK, just to finish up, I found a 9 pin round male connector and wire on https://michiganmotorz.com/ with variable lengths (3'-35') and I'm probably going with a 10' for $100. it is missing Pin 10 which according to my Pin-Out for this 2005 Engine, is a 'Data Line'. (777-6118-XX) Does anyone...
  8. dfswan

    Boat side of Crusader harness RA121079 Male connector

    I noticed that the Volvo Penta Main Harness Adapter 14 to 10 Pin 3884406 (Female) has the same connector to attach the engine to the dash. Apparently, this Dash to Engine Harness/connector I'm looking for is not just with Crusader Engines.
  9. dfswan

    Boat side of Crusader harness RA121079 Male connector

    I found him and sent him a note. We'll see how it goes. Thanks for pointing me in the correct direction.
  10. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Here is the pinout for the 2005 5.7 MPI. I can see Mercury not even having a pin 9 but I believe that is active on the Crusader.
  11. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Thanks for your thoughts. I got a picture of the wiring harness for the 2006 Model, and sure enough, it doesn't use the female 10 pin connector. The 2000 - 2005 use the RA121079 Engine Wiring Harness Assembly (With round 10-pin boat harness connection) Earlier models use the 10-Pin as well. PCM...
  12. dfswan

    Boat side of Crusader harness RA121079 Male connector

    No Doubt. This harness has been cut and spliced once before I got the boat and I'm concerned that it might happen again if I just replace the one wire. There is a lot going on with this plug and harness, and I want to be as reliable as I can be. ...but, if I can't find the connector or the...
  13. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Thanks AllDodge, I'll check it out.
  14. dfswan

    Boat side of Crusader harness RA121079 Male connector

    Good morning. I have a Crusader 5.7 MPI 2005 (330HP) with a bad starter connector on the instrument/boat side of the RA121079 engine harness. I'm looking for the mate of the 10 Pin Femail harness on the boat side of the connector. In a perfect world, I would replace the whole harness, but...
  15. dfswan

    Diagnostic Scanner

    You’re right, chances are the scanner won’t help in a “starter” situation with the engine not running. I’d hate to think it is the control module. $$$ I’m having a marine mechanic check it out next Friday, but I sure would like to diagnose it myself (with your assistance)😏
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