Honda Outboards BF40A/BF50A Service Manual, Page 193Get this manual
HONDABF35A4I5A bINSTALLATION
IGNITION COIL 1) Cross-reference the number stamped on the high tension cord and the number on the ignition coil grommet, and pass the ignition coil through the grommet stamped with the same number
IGNITION, COIL GROMMET
2) Align the concave in the ignition coil grommet with the con vex of the ignition coil, and assemble the ignition coil with the ignition coil grommet securely
[1] IGNITION COIL
3) Connect the ignition coil wires to ignition coils as shown
IONmON COIL