Grounding Car Amp To Battery | Electrical Wiring

Nov 29 2009 92 explorer 4 atomic apxx 15s duel 7s 4rth order bandpass wall 4 powerbass xa 3000d s 16 8volt batts wired to 16 volts 9 9 runs 0gauge 152 3 db. First time you try to start the car the amp goes up in smoke and possibly the wiring as well.

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Grounding amp to battery vs chassis.

Grounding car amp to battery. Using our demo vehicle we show you good and bad examples of cable grounds and discuss the problems caused by an. Welcome to the smd forum. Learn how to properly ground the power ground wire from your car audio amplifier.

Directly to battery it goes directly to battery without having to to pass threw car. The best way to ground your car stereo components is to run a 10 or 12 gauge wire from the amp and 12 gauge from all other components such as head unit and active crossovers to a central location. An amp produces heat which its heatsink absorbs and radiates so keep a few inches of air space around it to allow the heat to dissipate.

Then run a single ground to the best source of ground the negative terminal on your car s battery. Never mount an amp upside down as this won t allow heat to dissipate but rather radiate back into the amp. Car frame material has a larger resistivity than a copper wire car frame has many materials connected such as rubber so ground current may have to bounce off several materials to make it back to the battery ground other devices are using the frame as the ground so maybe it could cause some interference.

Keep the fins on the heatsink vertical if you re placing your amp on the wall of your car. The reason for this is that if the stock ground strap from the battery to the body were to come disconnected or get pinched cut somehow the amp chassis and ground wire become the new ground path back to the battery.

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