Good Morning hottoddytipup,
My name is Richard and I am more of an avid member of walleye central but I do come to this site from time to time. A well known and respected member of this site and walleye central texted me last night about this thread. Well it just happens that I re-wire boats. I have done many and my work is clean and professional.
I have done the wiring for others with the same issues you are referring to within your boat. Sounds like you need someone to follow each wire, clean them up, and add a new fuse box. No problem here done it many times for my own rigs and others off of walleye central.
I have installed many graphs both Lowrance and birds, trolling motors and more. I can run ethernet systems as well.
I am sending you a PM with my cell. Feel free to give me a call and discuss.
Richie