Possibly a bad ground in bulb circuit.  Current going through parking light
rather than to ground.
John
86 Westfalia
----- Original Message -----
From: "Jim Felder" <felder@KNOLOGY.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, August 26, 2006 6:26 PM
Subject: Yet another turn signal L.E.D. data point...

> While the turn signal light (proven to work in its circuit) doesn't
> blink, the parking brake light DOES blink slightly, in sync with the
> turn signal relay.
>
> ?
>
> Jim