Been having issues with my charging system. Thought it was a battery so I replaced it. Still went dead. Found a loose wire on the rectifier in front of the radiator. Still wouldnt charge. I Checked the fuse on the wire going to the battery and its fine. I followed the wire back(black and a white) that charges the battery and when it got to the front by all the plug ins under the head light it dead ended. Looks like its been broke for a while. Ive looked and cant find where it was plugged in at. Any help would be great.

Its a 1998 sportsman 500.

Thanks