2011 Prostar CM871 Oil Pressure / Electrical

[JimT]

Similar to Ricky, I had an issue with dash going crazy, power loss, etc... Ended up finding a battery cable that had completely corroded away inside of the lug crimp. Visually it looked perfect, but with a little tug I was able to pull it right out of the crimp, green and ashy white.

Then another time I had a positive cable end crack and break and when I hit a good bump the cable would move and contact the aluminum battery box.

Point being, check you battery cables and ground points. You mentioned it all began after replacing a starter so I would start with those cables, work your way to the battery box and check and clean all the ground points you can find.