Tjacobs <thomas.jacobs@dva.state.wi.us> wrote:
> I am not sure what you are talking about. Some people suggest hooking
> a 9 volt transistor Battery accross the Car Battery terminals before
> you disconnect the car battery. It is cuppose to give enough juice to
> keep the presets in the radio from erasing. It may work with the anti
> theft codes also.

That might be an interesting exercise. Hooking a 9v dry cell across a
300Amp-capable 12v car battery ought to be a really bad thing.

I've never heard of that trick, but if anything, I would think you would
disconnect the car battery, and connect the 9v battery within X seconds.

I would never connect two dissimilar voltage batteries.

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Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8-122.5