[ROVERNET - UK] Blown fuse

[Slatskars]

Eric,

I figured that was what you were looking at, but I wanted to caution him not 
to use it on the Ohm function to check current. In fact if I remember 
correctly, an Amp meter must be connected in series with the circuit being 
tested. I have yet to see a Multi-meter that will handle 35 amps. I prefer 
to isolate the circuits, disconnect the battery and use the Ohm function. 
Much less hazardous on meters.

I don't remember if I mentioned it on this network or not, but the best book 
that I have ever seen on Auto electrical systems is Rick Astley's MGB 
Electrical Systems. It has only been out for a few months and is available 
on Amazon.com. He uses an MGB as the demonstration vehicle, but it all 
applies to any car and particularly an British car with Lucas.

Slats
----- Original Message ----- 
From: "Eric Russell" <p6rovers at yahoo.com>
To: <rovernet at lyris.ccdata.com>
Sent: Sunday, May 06, 2007 2:28 PM
Subject: Re: [ROVERNET - UK] Blown fuse


> Slats,
> I guess I was looking at my "multimeter"  ;-)
>
> Eric
>
>
> --- Slatskars <slatskars at comcast.net> wrote:
>
>> Eric,
>>
>> Thanks for adding your input. I do not have a wiring
>> diagram for this car. I
>> was basing my input on the information given.
>>
>> I would like to mention though, DO NOT try to use an
>> Ohm Meter as an Amp
>> Meter. This will cause it to have a VERY SHORT life.
>>
>> Again the process of elimination would be to
>> disconnect the items listed by
>> Eric, until the fuse does not blow or if using the
>> Amp Meter, the current is
>> down.
>>
>> Slats
>> ----- Original Message ----- 
>> From: "Eric Russell" <p6rovers at yahoo.com>
>> To: <rovernet at lyris.ccdata.com>
>> Sent: Sunday, May 06, 2007 10:19 AM
>> Subject: Re: [ROVERNET - UK] Blown fuse
>>
>>
>> > Gordon,
>> > My understanding:
>> > Ref:
>> <http://www.roverclub.ca/p6circuit1968.69.pdf>
>> >
>> > is that the fuse also serves the:
>> > 1. Screen washer
>> > 2. Wiper motor
>> > 3. Stop lamp
>> > 4. Reverse lights and switch
>> >
>> > One way to begin, is to insert an Ohm meter right
>> > after the fuse and check the current before and as
>> you
>> > begin to switch on all the functions.  The fuse is
>> > rated at 35 amps.
>> >
>> > If the meter reads close to or over 35 amps, begin
>> to
>> > switch off some of the functions and see what
>> draws
>> > the most.  There may be a fault with that item.
>> >
>> > No ohm meter?
>> > There may be a restriction with the wiper motor
>> > causing it to bind and draw more current.  Check
>> that.
>> >
>> > There may be an insulation short in the wiper
>> motor or
>> > the screen washer motor.
>> >
>> > There may be a rub-through of the insulation on
>> the
>> > power wire to one of the functions.  You will have
>> to
>> > visually trace each wire.
>> >
>> > I hope that can get you started.
>> >
>> > Eric
>> >
>> >
>> >
>> >
>> > --- Gordon Harrower <griffo at comcast.net> wrote:
>> >
>> >> My 1968 TC is regularly blowing the fuse that
>> >> pertains to the turn
>> >> signals and the fuel and temperature gauges.  I
>> >> don't even know where or
>> >> how to start tracking down this kind of problem.
>> >> Any guidance would be
>> >> helpful.  Thanks, Gordon.
>> >>
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