Had the same problem last year.  Cleaned the ground wires and the blinking
stopped!

Alfred
85 Westy

> Not sure about your blinking light, but a few years ago I had the same
> symptoms on my 87 GL "Long John."  A normal round of short blinks at
> startup, and then afterward a non-stop blinking situation.  If I turned
> the ignition off and then back on, sometimes it would go back out.
> However, it was not long afterward that I was driving around in Westcliff,
> CO, and blew a headgasket.  As it turned out, the fan or fan switch (can't
> remember now) was defective and the engine overheated.
>
> I was never sure whether the blinking light and the blown head gasket were
> related, but after I had the head gasket repaired I also changed the fan,
> the switch, and the radiator and the problem never came recurred.
>
> The (possible) moral of the story: don't ignore those blinking lights!
>
> Warren L.
> 88 Westy 2.2 "Billy Bones"
>