Electric ground issues?
Having some electrical gremlins in our 2002 dutch star. Freightliner was not much help, so maybe the Forum can put this right. Having intermittent problems with instrument shutdown where all electric gauges quit, then come back on, cruise control causes check engine light to illuminate dimly, and may or may not control your speed, backup camera quits and restarts, and the quickee stairs have a mind of their own. I suspect a ground issue, the schematic shows 3 joints for multiple grounds, but does not mention where to look. Found 1 ground at frame on passenger side at engine for 3 cables, one at firewall on driver's side for several wires and one on pc board above steering wheel, all are clean and tight. There must be one somewhere that is corroded? Weather going to be bad here for next several days so I might not find it fast, but all replies welcome! Thanks!