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<blockquote data-quote="Deon1818" data-source="post: 8774907" data-attributes="member: 661289">8 ga will make a difference but not that big of a difference. In my opinion it looks like your connection is good enough to read good voltage, not good enough to draw any amperage. As soon as your amp tries to draw amperage by turning on, it drops voltage. Your multimeter will not do you any good if your testing resting voltage. Think of it like you ran a single tiny strand of power wire to your amp. not a small wire, a single strand of the inside of the wire. Would it still read 12 resting volts? yes. would it supply enough amperage to run the amp. No.Somewhere, you have a single strand connection, a weak connection, a dirty connection etc.&nbsp; it could be where your power wire connects to the battery, or where the fuse is, or you could have a ground problem. I would jump the amp rem so it starts pulling amperage, then do your multimeter testing. You&#039;ll get 12 volts everywhere the connection is good, start at the battery and work your way to the amp. i.e. if you have 12 volts before the fuse, but 6 volts after the fuse, theres your problem. &nbsp;For shits and giggles and string jumper cables to connect your battery negative directly to the amp negative. that would rule out ground.</blockquote>

[QUOTE="Deon1818, post: 8774907, member: 661289"] 8 ga will make a difference but not that big of a difference. In my opinion it looks like your connection is good enough to read good voltage, not good enough to draw any amperage. As soon as your amp tries to draw amperage by turning on, it drops voltage. Your multimeter will not do you any good if your testing resting voltage. Think of it like you ran a single tiny strand of power wire to your amp. not a small wire, a single strand of the inside of the wire. Would it still read 12 resting volts? yes. would it supply enough amperage to run the amp. No. Somewhere, you have a single strand connection, a weak connection, a dirty connection etc. it could be where your power wire connects to the battery, or where the fuse is, or you could have a ground problem. I would jump the amp rem so it starts pulling amperage, then do your multimeter testing. You'll get 12 volts everywhere the connection is good, start at the battery and work your way to the amp. i.e. if you have 12 volts before the fuse, but 6 volts after the fuse, theres your problem. For shits and giggles and string jumper cables to connect your battery negative directly to the amp negative. that would rule out ground. [/QUOTE]

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