[TR] TR4 wiring ignition

[Gary O'Hagan]

On Mar 21, 2009, at 10:46 AM, Randall wrote:

>> Where does the third brown/blue wire come from
>> and what does it connect to?
>
> I don't know.  But one way forward is to check that none of them are
> touching ground, and then connect the battery temporarily.

OK, first I need to buy a battery (what size?).
> Use a test lamp
> or voltmeter to discover which brown/blue is hot.  That wire will have 
> to go
> to the ignition switch.

Let's hope only one wire is hot.

> Then use your test lamp (better than a voltmeter for this test) 
> between the
> hot wire and each of the other NU wires.  Should be no light.  Turn on 
> the
> headlight switch, check again.

OK , I need to buy one of these (headlight switch) as mine is missing.
>

>  One possibility might be that some DPO has installed the wrong wiring 
> harness and the extra
> NU is simply extra.  Even the diagram in my TR4 owner's manual only 
> shows 2
> NU wires.
Maybe, but Both my original and replacement wiring harnesses are the 
same. They have three brown/blue wires.  Surely someone else must have 
this same setup.
>
>> Also how do you know when
>> a good voltage stabilizer goes bad?
>
> Criminal record?

Thanks,
Gary O
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