250-500cc Problems with lights, electrical issue..

Couple of days ago the lights went dead, next day it worked again. Tought it was a bad connection because i just messed with some wires under the dash. Worked fine but....
Now the problem is that all lights are dead, except the headlight glows weak.
I dont think it is the regulator thats behind this, but i dont know. The signs are there, but something just dont ad up.
Anybody experienced anything like this?
Where should i start to look for damage?

Thanks for any help.

Problem solved. Bad wires for the blinkers (that the bike dosent have) on the back that made a bad connection.
So, i was right to not think it was the regulator. Check your loose wires people. Can save you allot of trouble.