I did this by just quickly swopping the old ones with the new ones, only
a few drops of fluid escaped and no air got into the system.
 However it didn't solve the problem which was the brake warning light
coming on for no reason! (This was on a 1984 european bus.)

Jerome

William Greenamyer wrote:
> Anyone have a good procedure for changing the brake light switches on a 1984
> Vanagon GL?  Looking for a way to do it without making a big mess.
>
> William
>