Re: Corolla Stereo Issue


<justin.macqueen@xxxxxxxxx> wrote in message
news:1153825586.828723.223450@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thanks so much for your help. Correct, I used the factory wiring as it
was. No changes made. Battery sits at 12.3V with no ignition and rises
to 14.4V with ignition on at idle. When I pump the stereo at idle it
drops to 14.3V. I'm not convinced that's significant. A mate with a bit
more experience recommended I buy an aftermarket amplifier to run the
6x9s, as he said they'll drain a lot of charge when hooked up to the
head unit. No fuses are blown, and everything is grounded correctly. Is
buying a 'real' amp the way to go? Again thanks for your help. Glad
there's people out there who know their stuff!

They really shouldn't put much of a drain on the system. 4 or 8 ohms is 4 or
8 ohms!
It's the amp (either the built-in amp or a separate amp) that's going to
draw the current!

It's too bad you cut the harness. They make adapters that just clip in and
would be a hell of a lot easier to troubleshoot than just bare wires.

I'm still betting there is a wiring error somewhere. I'm sure you probably
have, but just check the +12V Constant and the +12V Switched one more time,
and also check your grounds. If it's not grounded properly, some other ckt
will try to ground through it and put an extra load on the system.

What I do is I use the ground from the original harness, and then also run a
ground to the chassis somewhere, usually to the frame provided to install
the radio. If this is plastic in your car, then find another good earth to
connect to.

BTW, did you try leaving the radio off and turning something else on? This
is a quick, off-the-cuff way to check the alternator/charging system. Also,
you could tap a voltmeter somewhere and monitor it while you turn different
things on and off.

The best thing, of course, is to bring it to a garage and have the
alternator tested.


.

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