I'm swapping out the bridge on my squier Bronco and noticed the wire sitting in a slight cutout under the bridge. My replacement bridge's holes don't match up like I thought it would, but I have no reason to believe it won't work once I drill enough holes. On using the internet to double check the right placement for the new bridge and found wire was called the 'grounding wire' and the article also said if the new bridge's holes don't match up with the old ones you should take it to a professional. I managed to adjust my truss rod without issue, so I think I can handle this; it's just with the name grounding wire it makes me think if I mess this up, I might electrocute myself. What is that wire?