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Battery Voltage on Ground Port of Amp

Love to hear it. Now go let it pound.
- Water Bear
- Post #20
- Dec 3, 2022
- Forum: Wiring, Electrical & Installation Help
Battery Voltage on Ground Port of Amp

Oh, one more thing. If you're grounding on the battery negative in your trunk, be sure to put your amp power wire on the battery positive in your trunk too.
- Water Bear
- Post #17
- Dec 3, 2022
- Forum: Wiring, Electrical & Installation Help
Battery Voltage on Ground Port of Amp

Yes. Grounding on battery negative is debatably the best ground. Ideally the engine block, frame, chassis, and battery negative are all tied together. The idea with grounding on the chassis is that the current flow makes its way back to the battery negative by flowing through those different...
- Water Bear
- Post #16
- Dec 3, 2022
- Forum: Wiring, Electrical & Installation Help
Battery Voltage on Ground Port of Amp

Yep, right on. Your trunk battery is in parallel with your under hood battery I assume - positive to positive, negative to negative. If so, grounding on the battery negative should work. If you see a spark when you connect to the negative that probably means your battery negative and original...
- Water Bear
- Post #11
- Dec 3, 2022
- Forum: Wiring, Electrical & Installation Help
Battery Voltage on Ground Port of Amp

If you have a long run of 10 ga or 8 ga wire, you could do a temporary run from the amp ground to your battery negative outside the car. Hell you could even do that with speaker wire. Then see if you still read +7 after hooking up the positive. Obviously don't run your amp on music with it wired...
- Water Bear
- Post #8
- Dec 3, 2022
- Forum: Wiring, Electrical & Installation Help