http://www.harborfreight.com/automatic- ... 42292.html
REPLACING A C4 CORVETTE BATTERY VIDEO
http://www.youtube.com/watch?feature=pl ... 03-roWP2A#!
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finding your battery dead when you want to drive the cars a huge P.I.T.A., spend $6 and eliminate the problem, honestly I figured this was a waste of money and typical of most HF tools it would never work, well at $6 I had to try it and while
it won,t charge a battery if its dead it will keep a battery charged thats fully charged, for weeks at a time, I only drive my 1996 corvette rather infrequently, so it was common to find the battery low or dead and needing a charge if it sat for a few weeks,
plugging this in keeps it charged PROVIDED you start with a fully charged battery,
keep in mind the light stays on because the battery is constantly draining, the current flow the charger supplies is MINIMAL, but its enough to prevent the battery dying
If the battery drains after running the car in what you may feel is far less time than might be normal, youll want to check all your frame grounds and then try to isolate the problems source, You disconnect one battery lead , put a volt/amp multi meter between the negative cable and battery post and measure current draw while pulling fuses one by one to identify the circuit that has the excessive drain while the cars not in use.
don,t forget you'll to Need to duct tape over any door , hood or trunk contact switch thats open while testing so you don,t find in error, its the interior lights circuit causing the problem,I know corvettes have contacts that turn on under the hood and rear hatch lights and youll need to do it so you can have the door open as you access the fuse panel without interior light on
There are also other items fed directly off the battery ( through fusible links) that would have to be metered individually after removing wires from the post behind battery.
Headlight motors some accessories,, heater control module , etc have hot feed ;key off.
related thread
viewtopic.php?f=70&t=2133&p=19303&hilit=battery+charger#p19303
http://www.hotrod.com/techarticles/gene ... ewall.html