Turn Signal switch design/production flaw [CB400N]

[Beans]

I had been thinking for the last couple of years, that I had a broken wire, since my right side turn signal didn't work half of the time, I could always fix it by jerking the wire, so I pushed fixing it for longer then I should have. low and behold the wire was fine when I dissasembled the handlebar controls. since the 3 wires mesured good, even when I twisted and turned them, I started to clean the contacts. It is a simple contact breaker. the 2 outer pins are left and right, and all 3 middle pins are ground. My outer pins are looking really bad so a good clean with a brass brush and its good again. so I put the breaker on the pins to test out the connections from the connecter side, and still nothing. I try mesuring everything alone again and it's all good.
All gound pins mesure to gound as well, but then I mesure the gound pins again after moving the board, and this time theres no connection, so I suspect it is the connection from the pin to the wire. I desolder and remove the old solder, as I reflow it oxidation emerges from inside. Honda used solder to brigde the 3 pins, this is bad practice and will break from vibrations, like it did here, symptoms resembled a broken wire. This might only be a problem on mine since it could be that the gound wire was supposed to span all 3 pins when soldered. I stripped a single core wire to bend around the 3 pins and make a solid connection then resolder it. polished the contact pins to 4000 grid and lubricated it with some dielectric grease and called it a day. It works flawlessly now.