[D'Ecosse]

Another good reason to do the headlight relay mod .........
Get the most significant current load out of that circuit completely.

 

[D'Ecosse]

... what is this relay mod you speak of?...

http://eviltwinsbk.com/forumz/index.php?topic=516.0

You will get improved headlight performance AND better reliability from your OEM wiring by diverting all the headlight current through relays.
The optional 'starter-headlight-cut' relay will also give you better starting voltage by reducing the total load from the battery during cranking.
(starter-headlight-cut relay not required on 05+ bikes - 'cut' is already incorporated in those models)

 

[D'Ecosse]

^^^ Those 'crimps' look inadequate (well intended)
Without the correct crimp tool, you might consider soldering them for additional conduction.

Also, as suggested earlier, you should also consider the headlight relay mod to prevent recurrence of the issue.

Dominant colour is first - what you are calling Red/Black is actually Black/Red.
Also, the connector 'gender' is defined by the terminal pin, not the connector shell.
So you have those references also backwards I believe.

I believe the Black/Red in the main harness should go to the Red on the Switch Harness.
Those should be largest gauge respectively.

The Black/Red on main is definitely the one on the input pole - if you disconnect the switch you can validate that the Red one is the equivalent on the Switch harness - simply turn the switch to Park and see which wire reads 'short' to the Brown wire (which is the parking lights) - it should be the Red wire.
If so, ensure the Black/Red goes to the Red.