Glad you solved the issue!! Curtis is one of the best!!
Same issues connecting my 2010 Bagger when I needed to clear a check engine light. I looked all over for an old laptop with the correct 9 pin serial port, to but no avail. The cable only uses three of the pins. I read the instructions from the Protune II download from S&S, and had a friend make me a cable with the correct serial port 3 pin connection (he simply removed the unneeded pins) to connect to the bike, and attached a 9 pin/USB adapter to connect to the laptop. I hooked it all up but the software would not detect a signal from the bike.
Roger had a connector (Thunderheart?) from an ignition module he bought some time back for his K9. It was a 9 pin serial port to USB, and using that with my cable, it worked like a charm.
If you have an old laptop with a 9 pin serial port you can make a 3 pin cable and be in business. I found any old adapter (9 pin to USB) would not work-S&S made a one that was proprietary, but they are no longer sold.
Although limited in my ability to sensibly discuss technology, here is what I did to get connected to clear my check engine codes:
Downloaded Protune II from the S&S website to the laptop. The only serial port on it is an 11 pin (useless in this case) and of course USB ports. S&S warns not to use a standard 9 pin serial port cable/connector, as it will allow excess current to pass thru that could damage the computer, as I remember. Be sure to go to the S&S website and look at the info accompanying the Protune II software, as it explains this.
Went to a tech buddy of mine and asked him to make a 3 pin serial port cable following S&S instructions (using a 9 pin—they simply didn’t wire unneeded pins. I think you could also just snip the unneeded pins out too. Mine was made with three wires.
I borrowed the adapter from Blacktopper—he has the cable too— (If you PM him and say you know Mastiff Dave or Mr. Wright, I bet he’d let you borrow it). See photo below of the adapter driver that came with the cable.
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Sorry for the fuzzy picture, but you can tell which pins are used.
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This is the package for the cable that Blacktopper bought that allowed the connection.