Cascadia electrical nightmare

Any answer on this? I’m having sort of the same symptoms, my 4 way hazards aren’t engaging to top off wipers, turn signal and city horn not working. 2011 cascadia with new Sam cab, new Sam chassis and pndb. I’ve gotten the truck to glitch some how while I was touching and cleaning grounds/positive feed cables and they all come on an work as should for 15-20 minutes and cut back out. I go back to last thing I did and doesn’t resolve it

 

Measure the voltage on SAM chassis on both the positive and ground feeds. About two weeks ago I ran across a 2013 Cascadia day cab with the ground cable was bad on the SAM Chassis. I was seeing between 6 & 7 volts on the ground. The ground cable at the grounding block was 0.0 Volts but 16 inches away on the end of the cable that bolts to the SAM Chassis the ground was showing between 6 & 7 volts. The cable didn't look bad. However, I did not cut it apart but clearly it had significant resistance. The original complaint was no hazards and trailer light issues among others.