2014 Freightliner cascadia evolution electrical problems

Hey everyone. As the title suggests I have a 2014 cascadia evolution with some SERIOUS electrical issues. I was unsure of where to post questions about this so I saw electrical and came here. Apologies if I'm in the wrong section of the forums any moderator feel free to move me to the right place. Anyhow let me get down to the meat & potatoes.

My 2014 evolution is practically brand new. Had 112k on the odo when i got it. I've since put about 70k on it so the truck is still (or should be at least) its prime but having only had it half a year I've already run into a gambit of electrical issues. Lemme run down the most common.

-This truck loves I mean LOVES to chew up fuses. Mostly the 12v power outlets of which i have 5 but only 2 work. It blows these fuses on a regular basis so much so I've removed every screw in the glove and only hand tightened 1 so I can have easy access to the fuse box. I never use the 2 up front foot anything beyond my .5amp cell phone charger and even that i unplug every night but it blows thru the fuses like a fat kid through cookies. It has also twice blown fuses to my cab lights for no reason whatsoever.
- my truck is equipped with a merritor wabco collision mitigation system that's somehow also tied directly into the entire cpu. Problem with the system is it occasionally will detect a false positive "imminent accident event" and just recently emergency braked my truck. Mind you that's a HUGE safety hazard to have my truck braking on its own. Immediately after that incident I informed my company and turned the truck into maintenance. Of course they could find no faults in the system and it hasn't done it since but it shook my trust of this whole radar collision avoidance crap.
- my truck has started throwing fault codes CONSTANTLY. At first it would be 1 or 2 codes and they'd happen separate of eachother and never in close proximity to eachother. But as of late it's been having multiple "faults" and it's come to the point where I'm starting to recognize the #### codes. Here's the most recent run-down of faults.
~fault 1:
Cdu 42 spn 90 4 fail 9
~fault 2:
545 16 0 spn 90 4 fail 9
~fault 3:
Cdu 42 spn 1121 fail 9
~ fault 4:
Cdu 43 spn 2919 fail 9
~fault 5:
545 16 0 spn 1121 fail 9 (duplicate? Or somehow separate)
~fault 6:
545 16 0 spn 2919 fail 9 (again listed as a seperate fault by the ecu somehow)
~fault 7:
No abs spn 639 fail 7
~fault 8:
Cdu 42 spn 5606 fail 19

Now I spent 6 years as a diesel mechanic but it was for the army so I know my knowledge doesn't have a huge cross section into commercial vehicles (especially since the vast majority of our vehicle maintenance is outsourced when it comes to advanced electronic systems) but my intuition in this case leads me to believe there's got to be some sort of issue with my trucks wiring. I was thinking maybe a bad wiring harness but I again have no experience with commercial trucks. Are freightliners known for electrical issues? I've found a few recalls for my model truck but they were issued way before I took ownership and this is a company truck to boot so I'd imagine they'd have taken care of any recalls way before I got it. Sorry I'm a bit distracted my collision mitigation system won't stop beeping CONSTANTLY to remind me the system has an error cruise control disabled. I forgot YAY! that's a thing with the merritor wabco "on guard" system. If it detects an error in its system it disables cruise control how awesome is that!? He says with heavy sarcasm.

Apologies for my long winded rant basically I'm looking for anyone who may have been a dealership mechanic or had experience with freightliner trucks. I'm hoping maybe you can shed some light on the error codes fault codes. I think the "fail" part is the number of times that specific module has failed a systems test but I could be wrong. And I'm hoping if any of you are the kinds guy I'm looking for that you could shed some light on what my best course of action should be. My truck has been in the shop twice already for the 12v fuses constantly blowing now it's throwing error codes every single day. I can't focus on my job knowing my truck is rapidly deteriorating. Any help us greatly appreciated. Thank you in advance.

P.s. The pictures show my radar aka CMS system fault and information panel to show it's registered 8 faults. Yesterday it was 3 today it's 8. Tomorrow it'll be 2 everyday it's a different number.

 

@ipogsd from what I can tell my windshield is fully intact no leaks I've read somewhere sometimes FLs have issues with the windshield leaking into the truck causing issues but never to this extent. I will double check though just to rule it out before taking it to a dealer (our fleet maintenance takes forever and hasn't fixed this yet). I'll see if I can Google a wiring diagram for the truck I know most common grounding points frame rails, battery terminal etc but this entire truck except a few spots is fiberglass so I'm betting there's bound to be a few under the chassis I'd overlook being unfamiliar with this truck. I didn't know about the cruise control override though I appreciate that tidbit of info. I understand the safety aspect of not using cruise in bad weather (rain, snow etc) so I understand why it disables cruise when the windshield wipers are turned on but having it disabled because the system is going haywire was driving me nuts. So again thank you brother.

@ Dave tell me about it. I spent 5 years auto tech and 6 in the army as a diesel mech and in those 11 years the most frustrating problems to solve always involved intermittent electrical problems. A customer bringing in their car because it did "this" only to be unable to replicate the problem and therefore unable to pinpoint the issue. In the army it was a lot easier as stated we outsourced those sorts of things but even so I hate chasing down electric ghosts in the machine on my own vehicles. Unlike my cars at home though I can't just hook up my sun tool to the ecu and pull fault codes and sensor values as I'm sure commercial trucks probably run their own obd ports. I'm going to check common ground in the morning before I get out on the road see if I can find any loose connections or corrosion. If I'm lucky it'll be a loose bolt and I'll be on my way otherwise it's back to the dealer.