Some rust on flywheel center hub, where the points arm touches. Brittle, cracked plastic wire covers around the terminals.

Ohms

0.4 black to end of condenser
2.6 black to stator plate ground
8.4 black to light green
110.6 black to dark green
0.0 black to light blue
2.9 black to yellow

62 dark green to end of condenser
62 dark green to stator plate ground
100.2 dark green to light green
0.0 dark green to light blue
66.4 dark green to yellow

7.1 light green to end of condenser
4.9 light green to stator plate ground
0.0 light green to d   ark green
5.4 light green to yellow
0.0 light green to light blue

2.7 yellow to end of condenser
0.3 yellow to stator plate ground
0.0 yellow to light blue
1.9 yellow to light green
5.8 yellow to dark green

This part is from a 1970 Yamaha CT1B motorcycle. Frame serial# CT1-017820

Some parts from this CT1B may also fit Yamaha CT1 and AT1. Cross reference part numbers to confirm. 

Want to make sure this part fits before you order it? I will help you confirm fitment and compatibility. Send me a message or picture with your V.I.N. number (usually stamped into the frame), and I will look up your bike to make sure you get the correct parts.

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SKU: 193 (1970 Yamaha CT1B Motorcycle)