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Re: [TR] Turn Signal Wiring 59 TR3A

To: "'Triumph Mail List'" <triumphs@autox.team.net>
Subject: Re: [TR] Turn Signal Wiring 59 TR3A
From: "Randall" <tr3driver@ca.rr.com>
Date: Tue, 9 Dec 2008 08:41:33 -0800
> Do you run 
> a ground wire for each turn signal light (the round red 
> lights on the tail) and do you run the ground to the screw 
> holding the socket to the body?  Also, for the tail/brake 
> lights, do you run the ground wire only for the left rear 
> light and again, to the mounting screw?

I believe originally there were no ground wires for any of the rear lamps.
But I also believe that adding them is a good idea.  However, I don't trust
the mounting screws to have a good ground, as they only go into a metal clip
that may have paint or rust between it and the body.  Instead, I made up a
ground 'harness' that connected to one of the fuel tank mounting bolts, and
visited all the rear lamps.

> while the tail lights/brake lights seem to be in series.

None of the bulbs/lamps are supposed to be in series, they all need to be
securely grounded for proper operation.  The tail lights may seem to work
without a ground; until the brakes are applied at the same time (when the
ungrounded lamp will go out).

Randall
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