moonsteel

When I turn my headlights off, there's a lot of hissing coming from the headlight switch, seems to take about a minute for the headlights to go down.
Is this an expected noise or should I be looking for a leak?

FB007

The vacuum part of the switch is bad/leaking/hose loose/etc.

Aggitated Monkey

Check the hoses to the switch and see it they are bad. If not; replace the switch.

moonsteel

I have to yank the dash this winter to replace the harness, I'll investigate the switch, thanks for the info

Mike Ward

The hissing could simply be air flowing through the switch as a result of a vacuum leak somewhere else. Do the standard troubleshooting before condemning the switch.

Aggitated Monkey

Thats what I was trying to say only not as well. If your going to the trouble of opening the dash I would suggest you have new hose ready regardless and replace them.

pauldana

Had this problem before.... try switching the vacuum lines on the Aux headlight switch under the steering colum, if that does not work then switch the vacuum lines around on the headlight switch.

hope it works for you also... p