HELP battery drain

Reply Subscribe

Thread Tools

Search this Thread

Jul 26, 2013 | 04:41 PM

zambo75

Thread Starter

Advanced

Joined: Dec 2011

Posts: 66

Likes: 0

From: apollo beach fl

HELP battery drain

1975 c3 corvette auto
OK, I have removed the neg battery terminal connected a amp meter from post to terminal was drawing 11.5 amps removed fuse one by one and still have a draw ,key in off position, no fuses left in box!
any help would be great ????

thanks steve

Jul 26, 2013 | 05:08 PM

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

Likes: 591

From: McHenry Illinois

Disconnect the alternator and see if it drops the amperage.

Jul 26, 2013 | 05:37 PM

zambo75

Thread Starter

Advanced

Joined: Dec 2011

Posts: 66

Likes: 0

From: apollo beach fl

still have it

Jul 26, 2013 | 08:43 PM

vetteguy75

Melting Slicks

Joined: Jan 2003

Posts: 2,713

Likes: 31

From: Shreveport LA

LA Events Coordinator

Jul 26, 2013 | 09:19 PM

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

Likes: 591

From: McHenry Illinois

Have you made sure the alarm key is off? Removed the circuit breaker for the windows? 11.5 amps is a good sized draw. Does it change with the doors closed?

Last edited by '75; Jul 26, 2013 at 09:25 PM.

Jul 26, 2013 | 10:28 PM

SIXFOOTER

Le Mans Master

Joined: Jan 2006

Posts: 9,192

Likes: 27

From: Boca Raton Florida

Wow, that is a big draw. You obviously have something turned on that shouldn't be. Alarm is a good place to start. Aftermarket alarm, stereo, Amp?

Jul 27, 2013 | 01:22 PM

zambo75

Thread Starter

Advanced

Joined: Dec 2011

Posts: 66

Likes: 0

From: apollo beach fl

help

The previous owner removed the alarm, tided the two pink together in the back ,and the front under the hood still have the wires unhooked ,all the parts are gone , key cylinder, horn from back. have a wiring diagram from lectric wiring .

Jul 27, 2013 | 02:40 PM

dochorsepower

Drifting

Joined: Sep 2010

Posts: 1,412

Likes: 50

From: Laguna Niguel California

Check the wire harness clamped to the back of the alternator. I also have a '75 and the metal clamp wore thru the wrap and the wire insulation. There is another common problem with this vintage, the wire bundle can wear thru where it passes thru the cowl.
Good luck.