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01-27-2012, 03:12 PM
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#1 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Electrical problem
Whenever I leave my battery hooked up and I go to start it the next day the battery is dead the truck is only wired to start right now none of the electronics are hooked up anyone got any ideas?
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01-27-2012, 03:47 PM
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#2 |
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1965 Chevy C10, 2005 4.8L/4l60
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,541
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Re: Electrical problem
You got a hot ground bud. Take the negative cable off and put a volt meter/light type probe between the battery neg and the cable, start pulling fuses until the draw disappears.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
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01-27-2012, 04:21 PM
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#3 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Re: Electrical problem
Thanks for the advice I'll look into it
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01-27-2012, 07:20 PM
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#4 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,541
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Re: Electrical problem
I had a bad headlight switch that I used that to figure out what was happening. Good luck!
__________________
Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
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01-28-2012, 02:18 AM
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#5 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Re: Electrical problem
so i looked into and yes the ground was hot it was actually getting the full twelve volts from the battery i played around with it a little and havent solved it yet also i have the main ground hooked up to one of the starter bolts that go up into the block so i was thinking maybe i should ground the black to the frame or the frame to the battery any suggestions?
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01-28-2012, 10:31 AM
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#6 |
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Registered User
Join Date: Jul 2010
Location: Beatrice, NE
Posts: 39
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Re: Electrical problem
First thing that came to my mind was a bad diode in the alternator.
Disconnect it (and insulate the main lead) and check for a draw again. Q
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'64 K20 327 |
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01-28-2012, 10:41 AM
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#7 | |
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Junior Member
Join Date: May 2006
Location: Peninsula, Oh
Posts: 197
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Re: Electrical problem
Quote:
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A good friend will come bail you out of jail, but a true friend will be sitting next to you saying, "That was ****ing awesome." |
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01-28-2012, 10:56 AM
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#8 |
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Registered User
Join Date: Apr 2009
Location: Amarillo, Texas
Posts: 636
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Re: Electrical problem
Changing the ground won't solve the problem. Following Clyde65's advice can. Give us a little more info. What year of truck? What type of charging system do you have? Could have a short in that system or the starter.
More info here: http://67-72chevytrucks.com/vboard/s...ad.php?t=33198 60 - 66 generic wiring diagram: http://67-72chevytrucks.com/vboard/s...d.php?t=378484
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Father and son built. Driven daily since 2012. 283, 3 speed. Mostly original. '81 PS and disk front. Fuel tank relocate. Maintenance, repairs and upgrades on his dime now. http://zacks64longfleet.shutterfly.com/ Higher res. photos in my gallery. Last edited by ljackson; 01-28-2012 at 11:23 AM. |
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01-28-2012, 01:31 PM
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#9 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Re: Electrical problem
The alternator is from an 86 pickup and I converted to get rid of the external voltage regulator the truck it's on is a 65 gmc
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01-28-2012, 01:51 PM
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#10 |
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Registered User
Join Date: Mar 2011
Location: Visalia Ca.
Posts: 36
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Re: Electrical problem
start pulling fuses until it goes to zero volts and that will show you what circuit it is.
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01-29-2012, 04:54 PM
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#11 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Re: Electrical problem
Pulled all fuses still nothing
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01-29-2012, 04:54 PM
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#12 |
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Registered User
Join Date: Jan 2012
Location: Janesville Wisconsin
Posts: 31
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Re: Electrical problem
Or I guess I meant I pulled all fuses and I was still getting voltage on the ground
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01-29-2012, 05:03 PM
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#13 |
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Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: Electrical problem
Careful on the alt if it is a 10si stle with a flat plug at the back , the two spades looking at it from the back of alt the one on the left (or drivers side) is the keyed spade the one on the right or passenger side is live all the time the same as the output term at the back of alt. If you have the plug wired backwards the alt will still charge but will leave the regulator turned on all the time with the key in the off position so check the plug. Could also have a diode leaking in alt rectifier which will still charge some but will draw the battery down when not running. Put a voltmeter on battery terms cold without running get a basic voltage on a digital display and disconnect alt plug and alt wire to see if voltage increases if it does then your current draw is in alt.
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