[TR] 1157 Turn Signal Bulbs

[Bob Wanderer]

Are you sure you use the 1157 bulb for these turn signals? These are dual-filament bulbs usually used for tail/brake lights and, as Alex points out, have staggered side pins to insure they are inserted correctly as the tail filament is about 5 Watts and the brake filament is about 27 Watts. 

The 1156, which is a single-filament bulb, is usually what is used for the rear turn signals (also around 27 Watts). The side pins are both at the same depth. The fronts are either single filament or dual filament when it is a turn (27W)/parking light (5W) combination.


----- Original Message -----
From: "Geo Hahn" <ahwahneetr at gmail.com>
To: "Triumphs" <triumphs at autox.team.net>
Sent: Thursday, December 2, 2010 12:03:16 PM
Subject: Re: [TR] 1157 Turn Signal Bulbs

On 12/2/10, Alex <ambritts at bellsouth.net> wrote:
>
> This may sound silly, but if they have pins/studs on the side of the socket,
> make sure if they are staggered you are aligning them properly. I have
> encountered this in the past.

IOW, the little posts on the sides of the base are not at the same
point (so the bulb can only be fully inserted one way 'round).  Look
inside the socket to see which channel goes deeper as that gets the
post that is nearer the bottom of the bulb -- or just try one way then
the other until it works.

I use 1157s on those turn signals because they are also brake lights,
but do not know if yours is set up that way.

Geo
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