. . . or, can it only cause a loss of amps delivered to the end of the wire in the wiring harness? The voltage drop being seen in this case is constant.
i'm going with no on this one. it must have stopped off at something or has been tapped to another component. can you isolate down the lead where exactly the drop occurs?
More like corrosion in the connectors that is causing resistance. A short to ground would create a much more pronounced drop.
Measure the voltage to the computer ground return,not the chassis ground.If it still inputs wrong there is a fault in the internal computer voltage regulator.
There is no such thing as a 'partial' short. It's either shorted or it's not. Voltage drops can be caused by corrosion, resistive wiring or a load between the source voltage and ground. Those type of problems will show a consistent voltage drop whereas a short will show a drop to zero right before your fuse blows or you wiring burns.
