Join Date: May 2002
Location: North Carolina Sandhills
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Although the 9V speaker check sounds easy and pretty good, the best check would be with a multimeter. You need to check two things: a) that the wires are continuous from source to termination, and b) that they are not shorted to ground or each other.
With the leads at the termination end twisted together check the ohms reading from the source end. Depending on wire size and length, a typical reading will be 4 ohms.
Then, with the leads at both ends open, check the resistance between the conductors and from each conductor to ground. You should find very hi resistance, such as 30 meg ohms.