Currently the charging system indicator, brake and all door lights come on occasionally but only stay on for a 1-2 seconds and then go off. Since both the battery and alternator have very recently been replaced, I’m wondering if the problem is something like a loose wire, and if so, how to find it? I took it to my local independent mechanic today and the battery and alternator tested OK and the main electrical wires are also OK. When he started the van and wiggled the ignition key, various instrument lights would go on and off. He suspects that the connectors of the ignition switch wiring harness don’t have a solid connection (corrosion?) and that replacing the wiring harness may solve the problem.
Does this make sense or there other possible causes of the problem that I should investigate?
I have become concerned about traveling any more than a few minutes from home, since if the charging system indicator stays on permanently, I cannot drive for long before the battery would die.