This weekend I took all the ground wires off the wall, cleaned them and put them back on. The ground strap is a year old an still looks fine. The van seems be running smoother and the idle is better. Problem is now the oil light, alt light and ox light are all flickering. I took all the wires off again, cleaned even more than back on and the flickering was gone for 5 minutes but came back. The alt and O2 flicker dimly together and the oil light comes on bright and flickers at a different rate than the other 2.  They do not do this when idling, mostly when accelerating.   Which wires should I investigate?

1983.5 WC Westy.

Thanks,
Bryan

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