That is exactly correct. Adding a resistor in parallel to the LEDS increases
the current and fixes the problem. I forget what size but it shouldn't be
hard to ascertain by trial and error. For a starting value, measure the bulb
you remove, then decrease resistance. Pay attention to wattage.
Ken Lewis
http://neksiwel.20m.com/
in statu viae

----- Original Message -----
From: "David Beierl" <dbeierl@ATTGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, July 02, 2010 3:59 PM
Subject: Re: [VANAGON] Switch to LED lighting

> At 03:28 PM 7/2/2010 Friday, Jay lefstein wrote:
>>Why/how would led lights confuse the cruise??
>
> If a particular cruise control setup detects the current in the
> stop-light line to tell that the brakes have been applied, the lesser
> current drawn by equivalent LEDs might not trigger the cruise control
> to drop out when the brakes are applied.
>
> Yours,
> David
> ps -- That's not a good method IMO anyway because the lamps might be
> burnt out, circuit bad etc.  But it's a lot more convenient than
> having to mount a switch at the brake pedal, or install another
> hydraulic switch in the master cylinder.
>