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Posted by: David_S Aug 13 2003, 11:43 PM

I was messing with my wipers today and can't get them to work on high, figured out I need a new switch in the column. I also noticed that Hayne's says this is a two speed motor, so I would think that the switch would have three positions(off, low, and high), but my switch has four positions. What is the fourth position for? Car is a 1973. What am I overlooking ??? Thanks .....David

Posted by: SirAndy Aug 14 2003, 12:59 AM

if position 4 is down, then it's for the intermittent they never hooked up.
some cars have it on the column, but it was never used.


you can, however, add a sort of intermittent
by adding a intermittent relay to your wire harness.
the factory has already a place reserved for that.
however, that intermittent relay only works in conjunction with your
windshield washer, meaning your wipers will run 3 or 4 times when
you activate the windshield washer ...

a article on how to hook this up can be found here:
http://www.914world.com/bbs2/index.php?act=ST&f=5&t=2094

later,
Andy

Posted by: David_S Aug 14 2003, 11:51 AM

So .......... without the intermittent relay, the positions starting from "down" would be ....off, off, low, high, ? This is how they are now, except no high because my switch is bad. Can these switches be repaired or do I have to live with it since they are NLA ??

Posted by: Kerrys914 Aug 14 2003, 11:59 AM

Andy ..Does one need to get an additional wiring harness for the relay OR is the factory harness wired for this relay?

Cheers
Kerry

Posted by: SirAndy Aug 14 2003, 02:11 PM

you'll need a additional harness with the socket for the relay.
this is/was a original porsche part, never seen it for sale anywhere,
i got mine from a donor car that had it installed.

but all cars (73+) come with the connectors to hook this up.

Andy

Posted by: SirAndy Aug 14 2003, 02:13 PM

get a new assembly from a donor car.
i got mine from EASY in oakland ...

usually, the lowest position is blocked out by the plastic cover.
Andy

Posted by: ThinAir914 Aug 14 2003, 03:00 PM

What happened to the pictures in the original thread about how to do this?

http://www.914world.com/bbs2/index.php?act=ST&f=5&t=2094

Posted by: SirAndy Aug 14 2003, 07:57 PM

damm, i didn't even know the pictures were missing.
i updated my website and forgot to move them over.

fixed. they work again.

so, here are the instruction WITH pictures ...
http://www.914world.com/bbs2/index.php?act=ST&f=5&t=2094

Posted by: Bleyseng Aug 14 2003, 08:40 PM

Andy, is this a classic thread yet?? It should be.

Geoff

Posted by: Hi_Fi_Guy Aug 14 2003, 09:14 PM

I have a '74 and the manual states that this position is for "mist" and the wipers sweeps once every 8-10 sec.s Works for me just as the manual says. I have heard that true intermittents were available on the 916-6 cars.

Ironically my 2002 Boxster has the same feature... seems you have to get the Bozster "S" to get the real intermittent wipers.

Some things never change.