Yep. All one (expensive) unit. The main reason these switches fail is
oxidation of the contacts, leading to overheating and melting of the
plastic. VW puts the whole current going to the headlights through the
switch, so the best method to preserve your replacement switch is to
put relays into your headlight circuitry.

Also note that 91 Vanagons use a different switch than earlier years.

On Jul 20, 2009, at 9:48 AM, Mike Frost wrote:

> Hello all,
>
> While camping this weekend my headlights failed and I traced it down
> to the
> dim/bright switch on the column. (replaced the main headlight switch
> last
> year) If I purchase a turn signal switch, does it include the
> headlight dim
> switch?
>
> Mike Frost
> 1986 Vanagon GL
> 'Wasserleaker'