so yesterday i put in subwoffers, they worked for about 5 min then i shut off the car. disconnected them, now the car wont start at all. batterys good, fuses are good, not sure about relays, dont know how to test them, but when i try to start the car nothign but silence, not even cranking. i tested the battery with a DMM and its a good battery, BUT when i put the keys in the car noting happens, not even getting power to locks,radio,lights,anythign. NOTHING at all happens. anyone know whats up? Thanks

sounds like you definatly blew a fuse or your battery isn't connected.
Check the terminals and make sure they're tight.

I would guess checking the big fuses in the bay, starting with the 100a alt fuse.

Fusible link needs to be replaced. any idea on how to do it? or does this HAVE to be done by a tech?

yeah you blew the main fuse link. its under the hood in teh fusebox. its very easy to change and its the largest fuse in there

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some help
http://www.6gc.net/forums/index.php?showtopic=65656

http://www.6gc.net/forums/index.php?showtopic=75306