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Old 18 Sep 2009, 08:53 am
bobdole369 bobdole369 is online now
Cool Cruiser
 
Join Date: Nov 2007
Posts: 392
Default Re: Subwoofer power source?

Once I got more than a hundred watts running in the back hatch I put in a 4AWG straight to the positive on the battery. Theres a bunghole through the firewall with a grommet already there near the brake pedal, just big enough for a 4AWG.

Always fuse right at the battery BEFORE it goes through the firewall. I put a fuse holder on top of the plastic fuse holder in the engine compartment. If anything ever happens, thats what will keep your car from going up in flames. 100A fuse is a very wise investment.

Batteries can and will cause a 4AWG wire to heat up, melt all the insulation off, weld itself to the frame, glow red hot and cause the carpet and interior to catch fire. FUSE IT!

Ground comes from bolts at the rear hatch under the trim. Ring connectors fit nicely. I did 2 separate 8AWG runs to 2 bolts. Also doesn't hurt to run another 4AWG up to equalize the ground between the dash metal and wherever you put your grounds. Should remove any alternator whine from the inherent ground loop.

I ran power on the left side, under the easy to remove trim right at the door threshold. SImple to keep it out of sight. RCA's ran along the right side under the same trim panels - lotsa room there.

You'll save yourself hassle by putting in a distro block along with another set of fuses back in the hatch (if thats where your mounting).
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