The brake and turn fillaments are equal in output. The running needs to be
dimmer than brake, or nobody will know when you apply the brakes and they
will run into you. In Europe, rear turn signals have to be yellow, and
brake and running lights are red. So the top light lens is yellow on Euro
cars, and is in the top position. The bottom lens is red, because the
brake, running, and reflector can all be moulded with the same colour
plastic. Interestingly, in 1970, USA tail lights did go two tone, with red
running/brake light on top, and the turn signal lower, however on British
models, the yellow turn light stayed on top, and the red portion of the lens
stayed on the bottom. I have changed to the early british yellow upper lens
for my turn signals so that there is no question from behind if I am
stopping or turning.
Dave R.
----- Original Message -----
From: "Michael Rowe" <mdrowe@optonline.net>
To: <spridgets@autox.team.net>
Sent: Friday, August 22, 2008 7:29 PM
Subject: [Spridgets] More on visibility
So I rewired the fixture to:
> 1. Brightest on top for running; 2. Next brightest on the bottom for
> stopping; 3. Weakest on the bottom for turning. The fixture is all red,
> no yellow part.
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