It appears the original Yamaha service manual is wrong about using the orange wire as the common wire for testing the two p/u coil models '85 - '89 (as mentioned by Maleko in a post many moons ago). The black wire is the common. I'm always reluctant to say the manual is wrong but they also state the p/u coils are on the right side of the bike so it seems safe to do so in this instance.
So, using the black wire as common I got 116, 112, 113, 115 at room temperature and 136, 131, 132, 136 after warming the bike up. Has anyone with the old style p/u coils done this testing, if so what were your readings?
So, using the black wire as common I got 116, 112, 113, 115 at room temperature and 136, 131, 132, 136 after warming the bike up. Has anyone with the old style p/u coils done this testing, if so what were your readings?
