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<blockquote data-quote="Lasherž" data-source="post: 8707176" data-attributes="member: 679555"><p>It's not a good idea to earth the amp at the negative terminal due to fusing, the positive cable should always be significantly longer than the negative. Provided you have a nice beefy ground wire going from your battery to a frame or engine bolt you have no need for that anyways.</p><p></p><p>That aside, I don't think that would cause the issue, it's more for safety concerns. It seems like you're already thinking correctly about the next step, check the fuses. The signal on can power the protect light, but there's no indication that I've seen from what you've said that the positive rail is being fed from the positive cable. It could be an open circuit inside the amp or more likely it could be a fuse. That's my best guess at this time.</p></blockquote><p></p>
[QUOTE="Lasherž, post: 8707176, member: 679555"] It's not a good idea to earth the amp at the negative terminal due to fusing, the positive cable should always be significantly longer than the negative. Provided you have a nice beefy ground wire going from your battery to a frame or engine bolt you have no need for that anyways. That aside, I don't think that would cause the issue, it's more for safety concerns. It seems like you're already thinking correctly about the next step, check the fuses. The signal on can power the protect light, but there's no indication that I've seen from what you've said that the positive rail is being fed from the positive cable. It could be an open circuit inside the amp or more likely it could be a fuse. That's my best guess at this time. [/QUOTE]
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