Expert help needed: Identfying leads from humbucker.

[FVH]

Hello!
Help is much needed, and I hope some experts on here can provide that.

I took it upon myself to help a friend to mod his guitar so that he could get single coil tones from his two humbucker fitted Yamaha N89 from the mid-2000's.
When I looked into it, the unmarked humbuckers only had two leads each, so I plan to convert them to 4-lead pickups.

The problem is that I find the wires within the pickup a little strange as far as south start/finish goes. The pickups I've seen before has been from top to bottom: north start, north finish, south finish, south start.
This one seems to have north start, north finish, south start, south finish.
The pickup has from top to bottom: White, black, white, black leads. The top goes to ground, the black is connected with the lowest black lead, and the third wire from the top (white) is hot.
I've taken a picture of the pickup in question; the bridge pickup, that has screws in the coil closest to the bridge. (The neck pickup is opposite, with the screw coil closest to the neck).

Could you please take a look at it and help me determine the start/finish on both coils?
Thanks a lot!

 

[Discharged]

Re: Expert help needed: Identfying leads from humbucker.

The black leads are the start of the coil in both cases.

/Peter

 

[FVH]

Re: Expert help needed: Identfying leads from humbucker.

Thank you for that, Peter.

Forgive my shortcomings when it comes to this.
Isn't the usual wiring for humbuckers this: North start = Hot; North finish and south start = linked and south start = ground?

My pickup then seems to be north finish = ground; north start and south start = linked and south finish = hot. Which I find strange.
It's a fairly low output humbucker at ca. 9K.

To get what I want (regular humbucker with option to split coils), should I resolder the leads so that they fit the "recipe"?
Added a couple of pics to explain.

Thanks.