I had this problem on an H1 and another instance on another (old Suzuki) forum - so I'm guessing the same problem here. The OEM wiring sends current in two directions through the incandescent bulb depending on which blinker is on. A standard LED will only allow current in one direction. There...
After lots of searching I found the H1023 is cut like the 30E - style H7, not T series like I mentioned earlier. After some penetrating oil I've got a new working key :)
Hi all, first post here. I have bought a '71 CB750 basket case that I am "fixing". I have a key that fits the ignition switch and fork lock - it is a Honda key and it looks old enough to be original. The problem is the numbers on the key and ignition switch do not seem to be close to anything...