I've read so much about relays recently, watched videos, my head is spinning. Trying to trace an intermittent electrical fault for an amateur numpty like myself isn't easy. I'm "learning" as I go. All I can do, is report what I find. Must be frustrating as a professional, reading about my haphazard approach and thoughts.
My simplistic thoughts on the difference in the engine when I swapped the relays, is this. If there is an intermittent fault in either the relay or associated wiring, that causes the rev counter to fluctuate, might it be the case that the engine could be slightly misfiring at the same time? When I swapped the relays,(or maybe nudged a loose contact) the rev counter did not bounce, so the engine would seem to be running stronger.
My simplistic thoughts on the difference in the engine when I swapped the relays, is this. If there is an intermittent fault in either the relay or associated wiring, that causes the rev counter to fluctuate, might it be the case that the engine could be slightly misfiring at the same time? When I swapped the relays,(or maybe nudged a loose contact) the rev counter did not bounce, so the engine would seem to be running stronger.
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