Re: [Amc-list] Turn Signals

[Glen Hoag <hoag@xxxxxx>]

 From FMVSS No. 108, S5.5.6:

"Failure of one or more turn signal lamps to operate shall be 
indicated in accordance with SAE Standard J588e, Turn Signal Lamps, 
September 1970, except when a variable-load turn signal flasher is 
used on a truck, bus, or multipurpose passenger vehicle 80 or more 
inches in overall width, on a truck that is capable of accommodating 
a slide-in camper, or on any vehicle equipped to tow trailers."

"variable-load turn signal flasher" = "heavy-duty flasher" in marketing speak

A paraphrase of the relevant portions of SAE Standard J588e:
"SAE-J588e allows that if any signal bulbs are not readily visible to 
a moving vehicle's operator, ...'there shall be an illuminated 
indicator to give him a clear and unmistakable indication that the 
turn signal system is "on ". Except on vehicles or combinations of 
vehicles using variable load flashers [heavy-duty trailer flashers], 
failure that of one or more turn signal lamps should be indicated by 
a "steady on," "steady off," or by a significant change in the 
flashing rate of the illumination indicator.' This standard, written 
into US Federal code, exists to help the regular automobile owner 
stay safe with respect to always knowing that their turn signals are 
actually working."
(Source: brochure from a supplier of daytime running lights that 
mount the front turn signal assemblies)

At 07:03 PM 2/11/2008, Tom Jennings wrote:
>What does "have never worked" mean? Not even one lamp lights
>at all? Or they dont flash? Etc...
>
>Most non-"heavy duty" flashers are DESIGNED to not blink if
>one lamp is out. It's a feature. Makes it easy to check for
>an out lamp; flip the lever, go look for the lamp not lit. The
>one with the good bulb/socket/wiring will be steady on.




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