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RE: Chronic Electrical Discharge

Subject: RE: Chronic Electrical Discharge
Date: Fri, 8 Jun 2001 02:10:12 -0400
Hi Bill,

Loosen one of the battery cables and connect a lamp between the loose clamp
and battery.
If the the lamp glows, there is a fault.
Loosen the alternator plugs and do the lamp test again. If then lamp is out,
propably one of the diodes of the alternator is short.
If the lamp still is on, loosen one by one the fuses and do the test again -
perhaps one of its related circuit cabling has rubbed to ground.
If above tests did not work, check the remaining unfused circuits one by one
by loosening a bullet connector as near as possible electically near the
battery as possible.
Try to find the ground contact.

Good luck.



'72 BGT

-----Original Message-----
From: []
Sent: Wednesday, June 06, 2001 3:57 PM
Subject: Chronic Electrical Discharge

My brother-in-law is a recent new owner of a nice little '71 MGB
roadster. DPO told him at purchase that the car had a chronic problem
with battery discharge over time. Since purchase, b-i-l has corrected a
loose connection of the brown wire at the alternator which was the
suspected problem site. He has also installed a new battery and had the
alternator tested. It is charging properly. The ignition light goes off
within a few seconds after cranking as normal. I belive that this car is
does not have the old type voltage regulator.

He is ready to shoot the car or sell it since it strands him at
inopportune times. He has obviously not learned the trick of all LBC
owners, that is to park on an incline. Can anybody suggest to him places
to look for faults or slow trickle leaks or how to procede with
diagnosis? Thanks in advance.

If the problem is not correctable, I'll make him a nice low offer!
Bill Snyder
'66 MGB
'72 MGB-GT

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