DIY Electric Car Forums banner

1 - 9 of 9 Posts

·
Registered
Joined
·
70 Posts
Discussion Starter #1
Re: [EVDL] Legal on lights!! How to dim LED turn signal indicators

Hi Danny and All,

----- Original Message Follows -----
From: Danny Miller <[email protected]>
To: Electric Vehicle Discussion List <[email protected]>
Subject: Re: [EVDL] How to dim LED turn signal indicators
Date: Sun, 07 Oct 2007 15:18:14 -0500

>Green turn signals??
>Not legal anywhere in the USA as far as I know. If it were
>legal, you'd be seeing teenagers mod this left and right.
>Many locales have even fought the purple button on the
>taillight to "violet" them a bit with some frequent
>ticketing.

One company, APC, recently went bankrupt because
they sold Fed DOT unapproved head and clear taillights and
fined them close to $1mill!!
While you can add lights you need to have one DOT
legal set.
Which for me is a pain as I can't find smaller
headlights that are approved at a reasonable price that are
more aero.
The big things are taillights, side/turn lights
need to reflect light when not on to fed spec's. Headlights
must have the correct light pattern to avoid blinding
oncoming vehicle drivers.
So you need to put DOT lenses at least over LED,
ect homemade lights on road vehicles.
Jerry Dycus
>
>Danny
>
>David Nelson wrote:
>
>>I have a Gizmo EV which uses green LEDs for the turn
>>signal indicators. The brightness is perfect for daytime
>>driving but they are extremely blinding at night. What
>>would be a relatively simple way to dim them for night
>>use? Would a resistor in the line do it? If so, I could
>then hook up a switch which could short across the resistor
>>for daytime use. The blinkers are run by a smart-blink
>>system which I think is used on motor-cycles and/or
>>mopeds. I also believe these are on the 12V side of my
>>DC-DC converter.
>>
>>
>
>_______________________________________________
>For subscription options, see
>http://lists.sjsu.edu/mailman/listinfo/ev

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #8
Re: [EVDL] Legal on lights!! How to dim LED turn signal indicators

Jerry wrote:
> The big things are taillights, side/turn lights
>need to reflect light when not on to fed spec's.
...
> So you need to put DOT lenses at least over LED,
>ect homemade lights on road vehicles.

That is so silly! Why can't you have separate reflectors/ red reflective
material at a close position? Having a reflective lens _over_ the taillight
must have originated as a cheap cost-saving measure when also needing a red
lens over a white incandescent bulb.

Seems like a regulation ripe for advancement. Could a small manufacturer
like you get an exemption, or would that be beurocratic quicksand?

- John


_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #9
Re: [EVDL] Legal on lights!! How to dim LED turn signal indicators

I think that is similar to what some companies do, it it not? I recall some
lenses having a 3/4" diameter reflector (as if that would do any good) in
the center of the lense. As I recall, DOT lenses are to focus light (make it
brighter???)

I notice some cars do use other reflective surfaces. It's also (supposed) to
be illegal (?) to use white tail light lenses... or at lease was??? I notice
that is a fad recently. Perhaps the rules are changing?
----- Original Message -----
From: "John Foster" <[email protected]>
To: <[email protected]>; "Electric Vehicle Discussion List" <[email protected]>
Sent: Thursday, October 11, 2007 2:24 PM
Subject: Re: [EVDL] Legal on lights!! How to dim LED turn signal indicators


> Jerry wrote:
> > The big things are taillights, side/turn lights
> >need to reflect light when not on to fed spec's.
> ...
> > So you need to put DOT lenses at least over LED,
> >ect homemade lights on road vehicles.
>
> That is so silly! Why can't you have separate reflectors/ red reflective
> material at a close position? Having a reflective lens _over_ the
taillight
> must have originated as a cheap cost-saving measure when also needing a
red
> lens over a white incandescent bulb.
>
> Seems like a regulation ripe for advancement. Could a small manufacturer
> like you get an exemption, or would that be beurocratic quicksand?
>
> - John

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 
1 - 9 of 9 Posts
Top