What changed is how VW wired up the dash lighting circuit and the fuse
for that circuit. DO NOT mix up the headlight switches. Putting the
later switch in an earlier van prevents the dash lighting from getting
any power. Putting the earlier switch in a later van removes the fuse
protection from the dash lighting wiring, risking a dash fire someday,
though everything may appear to work fine until then.

Mark

neil n wrote:
> Hi all.
>
> Web says headlight switch 251 941 531 B  (up to '89 or '90)  is now
> 251 941 531 M.
>
> What was changed? New PN switch handles more current?
>
>