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<blockquote data-quote="forbidden" data-source="post: 601715" data-attributes="member: 552189"><p>You are almost there. You need to see if there is any resistance in the probes (should be next to none). Next if the leads cannot reach the battery to amplifier you need to make an extension wire (or have one already made up just for instances like this) and make a note of any resistance through it. Now disconnect the ground wire from the amp and make sure it is not touching metal. Take one probe and touch it to this bare wire end (taking care not to touch it) and take the other end and touch it to the - battery terminal. This will give you a reading in ohms. Subtract any of the readings from the probes or extension line from this reading for your total.&nbsp; This can also be done as a step by step to go from alternator to battery, battery to chassis, chassis to amp etc.... An important note here is to not touch the probes or the bare wire with your hands, it will throw the reading out the window.</p></blockquote><p></p>

[QUOTE="forbidden, post: 601715, member: 552189"] You are almost there. You need to see if there is any resistance in the probes (should be next to none). Next if the leads cannot reach the battery to amplifier you need to make an extension wire (or have one already made up just for instances like this) and make a note of any resistance through it. Now disconnect the ground wire from the amp and make sure it is not touching metal. Take one probe and touch it to this bare wire end (taking care not to touch it) and take the other end and touch it to the - battery terminal. This will give you a reading in ohms. Subtract any of the readings from the probes or extension line from this reading for your total. This can also be done as a step by step to go from alternator to battery, battery to chassis, chassis to amp etc.... An important note here is to not touch the probes or the bare wire with your hands, it will throw the reading out the window. [/QUOTE]

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