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Scuba:
I did some quick research. What I found is that I believe an 80 doesn't have a safty switch. To quote my disc:
"An electronic fuel pump relay handles activation of fuel pump, of warm up compensation, as well as RPM limitation of the engine and thereby replaces the safety switch on the air flow meter."
So, it appears the answer to your 2 questions is that the location was on the air flow meter, and it's function was RPM limitation. But you have a fuel pump relay, so no safety switch. This info pertains directly to a 1980, so maybe your test is for an older version?
Gilly
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