[Tigers] Amp Drain

[steve wick]

I can't remember if it was here or on another website I go to, but someone took apart one of the switched battery disconnects and found some small contacts that weren't very stout, which could lead to welding closed, which would never really shut it off. If you have voltage/current on the output side of the disconnect, you aren't really disconnected, as stated earlier.


Steve


________________________________
From: Tigers <tigers-bounces at autox.team.net> on behalf of Will Seay via Tigers <tigers at autox.team.net>
Sent: Monday, June 11, 2018 4:23 PM
To: Dr. T. Y. McDowell
Cc: Tiger's List
Subject: Re: [Tigers] Amp Drain

Tym,

You say that your battery is disconnected but you are seeing a current drain from the battery.  We seem to have a failure to communicate here.  Either your battery is disconnected or you are drawing 1.5A from it.  You can't have it both ways.  I suspect that what you have done is placed your ammeter in parallel with the disconnect switch.  With the switch in the OFF (open) position your ammeter will be in series with any load presented to the battery.  Let's assume that's the case.  There are three brown wires going to the battery (B) connector of the voltage regulator your 1.5A could be going out of any of them.  One wire goes to the ignition switch.  Assuming that the ignition switch is in the OFF position, that can't be where the 1.5A is going.  The other wire goes to the lights.  If your light switch is good and your lights aren't on, your 1.5A isn't going there either.  There's another possibility though.  It could be that the disconnect relay in the voltage regulator is stuck on and 1.5A is going into your generator.  The simplest way to find out where the 1.5A is going is to connect only the battery wire to the voltage regulator B terminal.  If the 1.5A is still there then the problem is the voltage regulator and the problem will go away when you put your new alternator in.  If there is no current draw with the two brown wires disconnected, try replacing the wires one at a time.  The problem will either be in the ignition (switch) circuit or the light circuit.

Good luck

--
Will - 382001570
Tigers at embarqmail.com<mailto:Tigers at embarqmail.com>


On Mon, Jun 11, 2018 at 1:03 PM, Dr. T. Y. McDowell via Tigers <tigers at autox.team.net<mailto:tigers at autox.team.net>> wrote:

Tigers,


I recently completed a 3 1/2 year restoration on my Mk1A.  As expected, there are a few "bugs" to work out.


I'm moving from the original generator to an alternator (waiting for the CAT bracket assembly to arrive) and received a lot of help from the List last week.  Thanks!


Now I have a new problem!  I have an "on/off" type switch on my battery (new battery) that I turn off when not running the Tiger.  Even with the battery turned "off" there is a constant 1.5 amp drain at the battery.  Yesterday, I started disconnecting one thing at a time to see if the amp drain went away.  I want to find the problem before installing the alternator.  This morning I disconnected the battery pole on the voltage regulator and my digital multimeter read "0".

I'm not any kind of engineer, so I have no idea what that means, or where to look.  Could my problem be the voltage regulator - which will be eliminated with the alternator conversion, or should I look elsewhere?


Thanks in advance for any advice/assistance.


Tym McDowell

_______________________________________________

tigers at autox.team.net<mailto:tigers at autox.team.net>

Donate: http://www.team.net/donate.html
Archive: http://www.team.net/pipermail/tigers

Unsubscribe: http://autox.team.net/mailman/options/tigers/tigers@embarqmail.com





-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/tigers/attachments/20180612/e286b68a/attachment-0001.html>