Component identification - wire harness

[Paleomechanic]

So, this little black cylinder near the coils…any one know?
Also, in the new harness I have from Mike’s, the only wire leads close to it are a different colour . The old harness, the are black / and white with black stripe.
New harness, the only leads close are blue with stripes
New harness in second picture

Assistance much appreciated
Thanks guys !

 

[DogBunny]

I'm pretty sure the black cylinder is the diode.

 

[Paleomechanic]

I'm pretty sure the black cylinder is the diode.

Ok
Perfect!

Thanks !