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I wanted to check the main power cable in my '05 because I know there was an issue

with the crimping of the cable.

With the car hot after a run I turned on the high beams and blower on full and tested voltages,

I had 13.3V at the battery and 13.6 at the alternator.

Does this indicate a defective cable or is it normal to have a drop in voltage of .3 volts.


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You need to first correctly test the cable. What you need to do is disconnect both ends of the cable and check it for resistance over its lenght, if you find any, replace the cable.

What if I left the cable connected and checked resistance? Or, remove the cable at the battery and leave the alt cable connected while getting a reading?

Is there a way to disconnect the cable from the alt without removing the alt or anything else?

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There is a junction point under the vehicle on the right side near the engine thats prone to corrosion and can cause a voltage drop.

Is that the location of the "faulty crimp" done by the factory?

And by right side you mean passenger side?

Edited by sullivas
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