[RacingJake]

That's somebody's hack job ! You'll need a wiring diagram to figure that mess out.
Do you have the head light bucket and light in one of those boxes. Good Luck.

 

[RacingJake]

There are now ones with solder inside and all you do is heat it up and your done, no more crimps.

 

[RacingJake]

Look through this wiring manual for proper wiring-techniques with performance, reliability and durability in mind like used by pro-motorsports (F1/MotoGP), military and aerospace applications.

Spent 24 years in the Aerospace Field and there's nothing like laying on the Backbone of a F4 trobleshooting a wiring harness with the J79 engines running LOL.