The amp meter jumps around a lot, it's a clamping meter, not inline, and the minimum scale is 400amps. I better get an inline meter on it to get a more stable reading.

No after market radio, but it is a refurbished original radio, and it does not turn on at this time.

Can't see any lights on during daylight, but I'll check tonight, in a completely dark garage.

Today when I checked the voltage at the battery terminals, with engine one, prior to the first drive, it was 14.1v. Made 2 drives of 10-15 minutes each, at the end of 2nd drive, while engine on, showed 13.86v at the battery terminals.

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1989 420 SEL