Join Date: Dec 2005
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Time to get the multimeter out.
Set it to "resistance" and put the probes on each end of the cable. You should see a resistance of pretty much zero. If you see more than about 0.1 ohms, there's a problem with the cable.
Also, how have you attached the cable? Make sure the crimped terminals provide a good connection to the wire.
You can also check your two fuseboxes to make sure that nothing has blown in there, as you effectively shorted the battery terminals out via the car chassis. It's possible that you've just popped one of the blade fuses, which is stopping the engine from firing or your starter motor from working.
The measurement you took is an indication of the charging system too. When the engine is running, the power is being provided by the alternator. From what you posted, before the "incident", the battery and the alt were both fine.
Just out of interest, what kit are you running? The Big Three in the Clio look almost smaller than 8AWG.
Currently in Benny's garage:
His other half up the wall