battery drain on 1968
Thread Starter
Intermediate
Joined: Jan 2007
Posts: 49
Likes: 0
battery drain on 1968
hi all, my battery , if left hooked up, will kill itself in 1-2 days. I was reminded of this little problem today as I discovered that I had forgotten to replace it after last drive
i have the headlights almost repaired, waiting on parts, need to solve this electrical problem. Any suggestions on where to begin??? Apparently there is a component still drawing current after ignition switch is off. This is where I need you experts!
Thanks
i have the headlights almost repaired, waiting on parts, need to solve this electrical problem. Any suggestions on where to begin??? Apparently there is a component still drawing current after ignition switch is off. This is where I need you experts!
Thanks
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Pull the negative cable off your battery and hook a 12 volt test light between the cable and the post. Start pulling fuses (courtesy lights first) until the light goes out. The one that puts the light out is the culprit. And make sure the courtesy light switch (headlight switch) is off too.
If the light never goes out, it may be a bad diode in the alternator, or a your voltage regulator is stuck..
If the light never goes out, it may be a bad diode in the alternator, or a your voltage regulator is stuck..
Melting Slicks
Joined: Mar 2005
Posts: 2,095
Likes: 299
From: Midlothian VA
Pull the negative cable off your battery and hook a 12 volt test light between the cable and the post. Start pulling fuses (courtesy lights first) until the light goes out. The one that puts the light out is the culprit. And make sure the courtesy light switch (headlight switch) is off too.
If the light never goes out, it may be a bad diode in the alternator, or a your voltage regulator is stuck..
If the light never goes out, it may be a bad diode in the alternator, or a your voltage regulator is stuck..
very succint
Intermediate
Joined: Aug 2001
Posts: 44
Likes: 6
From: Southern California CA
Start the car.
Turn on the windshield wipers
Turn them off
Shut off the car.
Then try the test light to see if the battery still drains.
There is something goofy in the 68 wiring for the windshield wipers. If you bump the switch with the car turned off it will start to drain the battery. It will do this until you reset it by turning them on and off with the ignition on.
Burning Brakes
Joined: Oct 2006
Posts: 1,089
Likes: 43
From: Native Californian CALIFORNIA
Army
The courtesy lights, especially in the compartments, as the plunger sticks leaving the light on, are known for drawing pproblems. Before you start pulling fuses. Turn all the lights out in the garage and take a look at your car for and interior lights. Remember to have a flashlight with you!!!!!
CF Community Team
Joined: Oct 2004
Posts: 19,366
Likes: 5,244
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
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2020 Corvette of the Year Finalist (performance mods)
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The courtesy lights, especially in the compartments, as the plunger sticks leaving the light on, are known for drawing pproblems. Before you start pulling fuses. Turn all the lights out in the garage and take a look at your car for and interior lights. Remember to have a flashlight with you!!!!!
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