77 plymouth fury salon

Hey all new to the forum! I left the Marine Corps in Sept and I've had this gem tucked away after I inherited it from my grandad in 2019 after we pulled it out of the barn it was parked in, in 83 any advice for this sucker would be great! Just popped new wheels and tires on them 70s cop car wheels and then since rodents got to the wiring I've been struggling to trace and fix all the wires so if anyone has a wiring diagram or point me in the right direction to get one that would be great! It has the original 400 big block and tranny and only has 45k miles on it. My grandad parked it due to the electric ignition box messing up? I can't remember exactly what it was called but otherwise all the parts are pretty much there! Anyway thank you and hopefully yall have some good wisdom I can learn!