I have a bike with 4400 Tiagras, and 5500 105s, and I'm trying to find the right wire harness for them. So far I've ended up with wire harnesses that people will say will work, but neither seem compatible. One only has the sensor and a small circuit board with two buttons, the other has 2 plastic plates but the buttons are both on the right side, neither of which are useful to me. What wire harness do I need to find that has the 2 plastic plates, with one button on each side?