Let me tell you, the turn signal stalk is one funky mother....
I had the internal cam fail on me about 500 miles from home. Luckily, I was right near a junk yard I once regluared, so I popped in and grabbed what I thought to be the correct switch after opting out of the three prior switches due to them being different. 2gs have at least 3 different turn signal switches, and although the pinout shouldn't change, that doesn't mean you will find one pinout that will work with all three (or more) switches.
I understand what you are trying to do. There is a much easier approach to setting a load on the flasher switch that an LED bulb doesn't provide. When I put LEDs on all 4 corners of my bike, I had the same issue with fast flash, so I went to radio shack and picked up a 12v 20 ohm (iirc). They look like a little white ceramic brick, maybe the size of a biz card, with a wire protruding from each end. Sauder one end to your positive wire and the other to your negative in the wiring of each bulb and your fast blink and cruise control issues will be gone.
Your other option is to go with something like a mechanical flasher unit. I don't know what "style" our flasher is (eg... common canister, or does it look like a 5 wire relay, I just don't know). Look at places that sell truck parts as they tend to use mechanical flashers due to the regularity of changing load on the flasher unit when hooking up whatever is being towed.
Personal preference is to use the resistors. They work great, run you all of $2 each, if that and wiring is really simple (they aren't directional.)
