How would it possible to have a small voltage (1- 1/4) back feeding into the charging system when either the positive or negative cable and alternator regulator wires removed?

Asked by Jul 13, 2017 at 01:39 PM about the 1996 Ford F-150 XL 4WD SB

Question type: Maintenance & Repair

After replacing alternator and reconnecting battery cables noticed spark, then
checked all circuits and no short found, started to check charging system, static
voltage 14, running voltage 16, stopped engine key off one terminal removed
from battery and alt. and a voltage is present ?

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