Probably the guy with clean hands and all the diagnostic equipment. That was sorta my thing when I worked in auto repair in the late '80's. Still have the terminal tools and a set or two of common pins and whatnot. All obsolete now, of course. I know OP is looking to repair a Pete harness. I know KW carries some items like that, so Pete most likely does too. Question will be "is it in stock? If not how long to get one?" If it's a common failure, at least one of the 3 Pete dealers in my area would have one. Disclaimer, probabaly different terminals and whatnot, but a possible direction. CAT carries a ton of small stuff like the terminal repair kits and repair harnesses. I guess when you pay gold plated prices for gold plated parts, they tend to have what you need. First eye opener for me was getting a IAC oil pressure switch for my KW. Parts guy included the little o-ring, which I thought was on point. What was remarkable was that's the first o-ring I ever bought with a company logo and a part number printed on it. If that ain't attention to detail, nothing is. NAPA warehouse near me is also a good backup source for terminals and repair harnesses. Although lately they've been turning more into a regular parts store than the go to place with everything in stock that they used to be. YMMV. OP I hope you found a guy. I've only ever needed to find someone like that twice, and those times weren't in MD. I wish I could help.
The wires look good what I saw was the light circuit had gotten too hot so I pick up a used fuse box with wires Peterbilt have a number on the wire which describe what wire goes to what
They're starting something similar out here with the rise of hybrid and electric trucks. All I learned 10 years back with hybrids was cone it off and let an electrician fix the high voltage side lol.
I have no way of contacting him other than tagging him in a thread. There’s no guarantee that he knows someone. I think he lives around Baltimore.
The 95 KW I had needed the fuse panel rewired. Similar to an old Peterbilt, water runs down the windshield post right onto the fuse box and eventually corrodes everything. That was more than I wanted to deal with so I sold the truck.
The wiring connectors aren't proprietary The fuse box is dillblox, interior connectors packard 56 , exterior weatherpack
The way I fixed it was sell the truck and let someone else solve it. Bending the relay terminals into a curved shape buys some time, I hear.
Wire nuts are way better than what most people do . Using the vampire scotch locks or just twist and tape . a wire nut with a tight wrap of electrical tape will last along time . The epoxy filled ones will last even longer . I’d rather have a wire nut on a trailer than a butt connector any day.
And if the whole box is toast You can buy marine fuse boxes for boats with screw down terminals on both sides of the fuse so it’s easy to remove one wire at a time from the existing box and relocate it to the new one . move sine that in a couple of old cars I restored modded . a 64 Ford fairlane didn’t come with fuel injection , electric fans and air conditioning and a kickin stereo . So no space in the factory fuse box for those . Plus the factory box was rusted and just about useless because the glass fuses wouldn’t stay tight .