If you can try a known good battery. If it is old save yourself some future headache and replace it, even if it does not fix this issue.
The cables can be corroded inside the insulation causing a voltage drop. Check them for green stuff.
Starter could be tired. Most parts houses can check that also.
Good luck and let us know. :)
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Friday, March 3rd, 2006 AT 6:07 PM