Acceptable voltage drop, collectively added amongst all wiring and controls, is a total of 0.4 volts maximum on any + or - circuit.

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Thanks,
Mark in NC

"Spark plugs?...We don't need no stinking spark plugs!"
1985 300SD "Der Silberne Schlitten" 420,000 mi


Wish these were diesel:
2003 Ford Club Wagon 130,000 mi