I'm glad you found the fault. With this wire disconnected, I am unclear as
to why the ignition light would be on with the ignition key 'off', as
reported.
Never mind: as W. S. wrote, All's Well That Ends Well.
Brian
On Sat, Jan 9, 2010 at 12:38 PM, Paul Willoughby <paulwillou@socal.rr.com>wrote:
> My charging light is fixed. The smaller "F" terminal wire connector had
> slipped off the generator. Completely unrelated to bypassing the dash light
> rheostat. A quick tightening crimp of the female spade and I was back in
> business.
>
> I discovered it on step 3 of Randall's troubleshooting directions.
> Surprising that the car would run without it being connected and was even
> still charging 8-9 volts. (step 2). Ah, the mysteries of electricity.
>
> Thanks for the help, everyone.
>
> Paul "red faced" Willoughby
> Torrance, CA
>
> ----- Original Message ----- From: "Randall" <tr3driver@ca.rr.com>
> To: <triumphs@autox.team.net>
> Sent: Friday, January 08, 2010 8:14 AM
> Subject: Re: [TR] TR4 generator light on
>
>
> The red light
>>> stayed on the whole time, even after restarting the car twice.
>>>
>>
>> Obviously, you have pissed off the spirit of Lucas! Bright dash lights
>> indeed!
>>
>> Seriously, it's most likely coincidence. I would proceed to troubleshoot
>> the charging system ignoring the change to the dash lights.
>>
>> First step, repolarize the generator. Not likely to be the problem, but
>> easy enough to do. One way is to disconnect the wire from the 'F'
>> terminal
>> at the regulator, and brush it against the 'A' or 'A1' terminals.
>> Reconnect
>> and retest.
>>
>> My next step would be to remove the wires from the 'F' and 'D' terminals,
>> and join them together with a voltmeter (or DMM) to ground. Start the
>> engine, and rev it up just a little bit (fast idle) while watching the
>> voltmeter. With a healthy generator, it should rise quickly to 15v or
>> more
>> (book notes to not let it go over 20 volts). If so, the problem is the
>> control box, or the wiring to it.
>>
>> If not, repeat the test by removing the wires from the generator and
>> joining
>> the two terminals together directly. If you still don't get charging
>> voltage, the generator is sick.
>>
>> I've got a PDF of a Lucas booklet giving blow-by-blow testing procedures;
>> let me know if you'd like a copy.
>>
>> Randall
>>
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