solar panel repair

wa6ems

I am in the process of setting up some solar panels for my off grid living and i have bp 275 panels 4 of them.
on one of them the wire on the positive side broke in the junction box which attaches to the back of the solar panels to the cells. it looks like they are soldered I was wondering how i would go about repairing this i think i just need to solder the wire back to the panel but i am not sure the best way to go about it so it will once again conduct electricity.

thank you

vtmaps

Can you post a picture of the broken connection?   --vtMaps