Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > DIY Project Guides

Reply
 
LinkBack Thread Tools Display Modes
Old 02-23-2016, 04:57 PM   #1
Registered User
 
oldskool73's Avatar
 
Join Date: May 2015
Location: Sydney, Australia
Posts: 335
Adding variable intermittent wipers on an early box, the easy way

My 97 came without the variable intermittent wiper dial, and I wanted to add similar functionality without too much work or cost.

I came across a few mentions on other forums about using a VW relay, seems to be a thing in Volvo, Mercedes etc circles. I couldn't find any mention of this process on here so thought I'd add it.

There seems to be a number of different similar relays around, with similar numbers, some of which may or may not work. Googling will get you some discussion and alternatives, however the one I got and works for me is VW part #357 955 531, with '99' printed on the top...



There are quite a few all over eBay from $10+, I got mine from a guy in Germany.

Installation is just removing the old wiper relay, which is in position #16 in the relay box under the dash above the fuse box (it's the single blue one to the right of the double convertible top relay on the second row from bottom), and inserting the new smaller VW one. It was a bit of a pain to remove the old one, but with a lot of yanking and swearing it finally just slides straight out.

With the new relay in place, the intermittent function works in this way...

1) Flick the wiper stalk to intermittent once, then quickly off again.
2) Wait as long as you want the wiper delay to be.
3) Flick the wiper stalk to intermittent again and leave it there. The wipers will remember the delay and continue to run at the speed you set.

To change the speed just repeat the process. Simple!
oldskool73 is offline   Reply With Quote
Old 02-23-2016, 05:11 PM   #2
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: KC
Posts: 5,714
Garage
Cool
Actually seems simpler to use than the seperate dial, too.
particlewave is offline   Reply With Quote
Old 02-23-2016, 05:21 PM   #3
There Is No Substitute.
 
rick3000's Avatar
 
Join Date: May 2007
Location: West Coast
Posts: 3,060
Garage
But you don't get any fancy dials, or get rid of any of the dash dummy plugs!!!

Just kidding, this is definitely easier than having to break open the relay and solder. Probably a better and cheaper solution for a lot of people, unless you like fancy dash dials.
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com

Last edited by rick3000; 02-23-2016 at 05:24 PM.
rick3000 is offline   Reply With Quote
Old 02-23-2016, 06:36 PM   #4
Registered User
 
KevinH1990's Avatar
 
Join Date: Feb 2006
Location: Virginia
Posts: 1,363
The feng shui of the dash is vastly improved when you install the OEM variable intermittent wiper. The round dial of the control balances the round knob of lighter.

After installing my garage door opener using the targa switch and the intermittent wiper, I have only two blank switches on my dash.
__________________
2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-channel amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top and Frame
Homelink transmitter integrated in dash with Targa switch
Carrera Gauge Cluster with silver gauge faces, heated seats, litronics, painted console
KevinH1990 is offline   Reply With Quote
Old 02-23-2016, 06:52 PM   #5
Custom User Title Here
 
particlewave's Avatar
 
Join Date: Mar 2012
Location: KC
Posts: 5,714
Garage
Quote:
Originally Posted by KevinH1990 View Post
The feng shui of the dash is vastly improved when you install the OEM variable intermittent wiper. The round dial of the control balances the round knob of lighter.

After installing my garage door opener using the targa switch and the intermittent wiper, I have only two blank switches on my dash.
Dual "lighter" outlets look pretty good, too.

particlewave is offline   Reply With Quote
Old 02-23-2016, 08:21 PM   #6
Registered User
 
KevinH1990's Avatar
 
Join Date: Feb 2006
Location: Virginia
Posts: 1,363


Intermittent control on left, lighter on the right, and Porsche crest in the middle.

When the splash screen displays the Porsche crest, the flow of energy (qi), is at its most favorable.

The dual lighter outlets would minutely improve the qi since they are slightly more symmetrical than the lighter and the wiper control. The blue lighting must be applied to the entire dash.
__________________
2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-channel amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top and Frame
Homelink transmitter integrated in dash with Targa switch
Carrera Gauge Cluster with silver gauge faces, heated seats, litronics, painted console
KevinH1990 is offline   Reply With Quote
Old 02-23-2016, 09:01 PM   #7
Registered User
 
Join Date: Aug 2015
Location: Boise, ID
Posts: 80
I have missed this feature very much since parting with my 1993 VW Corrado many years ago. I've had rain-sensing wipers in several cars since then, but this programmable relay bests them all. I have the variable switch on my dash, but I think I'll install this relay because I love the functionality so much. Thanks for bringing it to my attention.

Last edited by thatguychad; 02-23-2016 at 09:06 PM.
thatguychad is offline   Reply With Quote
Old 02-24-2016, 08:10 AM   #8
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
That is cool! Thanks for the post. My dummy dash plug is now being used for an AUX outlet I had installed in my CDR23, so this sounds perfect for me. Does sound like it could involve putting some money in the swear jar getting the old relay out though


Sent from my iPad using Tapatalk
grc0456 is offline   Reply With Quote
Old 02-24-2016, 09:32 AM   #9
Registered User
 
lkchris's Avatar
 
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 649
I bought a complete 911/996 under dash wiring harness to extract the wiring needed to connect to the variable knob/switch. It came with the relay needed, so I've made most of my money back. Found on ebay from a guy lots cheaper than usual qualityporscheparts. FWIW, that harness weighs at least 60 pounds if not more.
__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI
3 BMW motorcycles
lkchris is online now   Reply With Quote
Old 03-01-2016, 03:42 PM   #10
Registered User
 
Join Date: Aug 2015
Location: Boise, ID
Posts: 80
I received my VW relays the other day and installed one just now. It took about 8 seconds to install, I had no troubles getting the Porsche relay out. It's so nice to have this feature again!
thatguychad is offline   Reply With Quote
Old 03-01-2016, 04:40 PM   #11
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
Ordered relay, hope it goes well!


Sent from my iPad using Tapatalk
grc0456 is offline   Reply With Quote
Old 03-06-2016, 05:09 PM   #12
Registered User
 
Join Date: Sep 2008
Location: Florida
Posts: 2,003
My car has the dial already but great find. Thanks for sharing. I've bought and sold a couple of '98's that I would have done this to in a heartbeat!

I'll do it on the next one!
dghii is offline   Reply With Quote
Old 03-06-2016, 05:15 PM   #13
Registered User
 
Join Date: Aug 2015
Location: Boise, ID
Posts: 80
Quote:
Originally Posted by dghii View Post
My car has the dial already but great find. Thanks for sharing. I've bought and sold a couple of '98's that I would have done this to in a heartbeat!

I'll do it on the next one!
Mine has the dial, too, but this is about 400% better.
thatguychad is offline   Reply With Quote
Old 03-10-2016, 09:09 AM   #14
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
Easiest and most helpful mod ever!!!


Sent from my iPad using Tapatalk
grc0456 is offline   Reply With Quote
Old 03-10-2016, 10:27 AM   #15
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
Oh, if any other forum member is interested, my eBay seller was late shipping the relay to me and to make up for it sent me two. The other one is available. PM me.


Sent from my iPad using Tapatalk
grc0456 is offline   Reply With Quote
Old 03-10-2016, 06:37 PM   #16
Registered User
 
Join Date: May 2015
Location: Greater Seattle, WA
Posts: 534
IM sent! Sounds like a very useful mod for a daily driven boxster in the greater Seattle area.
__________________
2001 Boxster
jakeru is offline   Reply With Quote
Old 03-11-2016, 03:37 AM   #17
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
Extra relay going to Jakeru.
grc0456 is offline   Reply With Quote
Old 07-18-2016, 07:45 PM   #18
Registered User
 
Pirate50's Avatar
 
Join Date: Apr 2008
Location: Oregon
Posts: 109
Garage
Thanks Oldskool, I'll give that a try. Figures there was a lot easier way to get VARIABLE intermittent wipers than the whole wiper hack. Particlewave, I like the idea of two lighter sockets since I won't need the dial.
__________________
2004 986 Basalt Black Metallic. L&N IMS Retrofit, 996 Door Cards, Smarttop
Pirate50 is offline   Reply With Quote
Old 07-29-2016, 04:50 PM   #19
Registered User
 
Join Date: Apr 2016
Location: SE Michigan
Posts: 385
Thanks for this great tip! Bought the car 3 months ago and the original relay was toasted and lost intermittent operation. This mod is totally plug & play and love the function with variable adjustment. Hard part was to find one, I bought one on eBay but it never arrived from Europe... just scored another one in Wisconsin at reasonable cost.
Boxstard is offline   Reply With Quote
Old 07-29-2016, 05:01 PM   #20
2003 Base 5-speed
 
grc0456's Avatar
 
Join Date: Jul 2015
Location: Stoneham, MA
Posts: 881
Garage
We finally got a little rain today in MA and on my way to the indie I used the intermittent wipers. I really like them even compared to those with a dial on our Hondas. With this, I set the delay exactly how long I want it - compared to twisting dials and guessing like " let's see if a quarter turn is equal to 3 seconds."


Sent from my iPad using Tapatalk
grc0456 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 03:03 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page