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MKII wiper delay mod
by
JT Turbo
on 18 Nov, 2008 17:34
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I've read a bunch about this on the vortex site but couldn't seem to post there, and searched here with no results, so I'll ask...
It seems confirmed that a MKIII programmable "99" wiper relay is plug-and-play replacement to the MKII "19" wiper relay. I did this, but for the life of me I can not change the duration of the delay. I have a CDN '91 Jetta TD Wolfsburg.
First I bought a new 3B0-955-531 and installed it. It wipes every 4 sec on delay but I can't 'program' it to a different duration. Everything else works fine, i.e. low/hi speed and wipe/wash etc. I used to have an E34 BMW with this type of intermittent wiper, so I am familiar with the operation. Well, maybe this one was defective...
So I went to the wrecker and picked up a nice shiny "99" (p/n 357-955-351) and installed it with the same results, except this one is on about a 6 second delay. efffffff.... anyone helpful suggestions out there as to what my problem could be?
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#1
by
burn_your_money
on 18 Nov, 2008 19:30
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What are you steps for "programming" the relay?
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#2
by
Quantum TD
on 18 Nov, 2008 19:31
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I put one in my 1982 Rabbit pickup. When I turn on the intermittent, the wipers will not come on immediately. I simply wait however long I want (up to about 6-7 sec), then turn the wipers off. Then, when I turn the int. wipe back on, it wipes the time I waited to turn them off.
I'm pretty sure that's how they work. I don't think you can get a 10 sec delay or longer. 6 sec seems about the max, and you can get it down to about 1/2 sec.
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#3
by
Vincent Waldon
on 18 Nov, 2008 22:54
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Relay 99 will give you up to 30 seconds actually (if it's working properly !).
To program, turn to intermittent for one wipe, and then turn to off. When you want them to wipe again push the stalk back to intermittent. and leave it there.. the relay will have memorized the delay while it was off and repeat.
To reset, just reprogram by starting over with a single wipe as above.
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#4
by
JT Turbo
on 19 Nov, 2008 11:47
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thanks for the suggestions - they're working now. I know I was doing the programming procedure correctly (per Vince instructions) before, but maybe inserting and removing the relays enough times cleared off some debris from the relay base contacts - but even that doesn't really make sense when I think about it. If there were dirty contacts, you would think that the delay function wouldn't work at all.
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#5
by
smutts
on 17 Dec, 2008 16:47
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GENIUS! I have been wanting to do this for ages, thankyou!
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#6
by
smutts
on 13 Jan, 2009 17:38
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Worked like a charm. Also got rid of the annoying couple of wipes after washing the screen, or extra smearing of roadsalt if the wash bottle has run dry. :twisted:
Now how would one alter the rear wipe timings? say twenty seconds instead of the usual seven? Solder iron & surgery? :wink:
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#7
by
smutts
on 17 Sep, 2009 14:19
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Bumped because it is a dead easy and worthwhile mod.
50p at the breakers and 2 minutes work.
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#8
by
macka
on 17 Sep, 2009 19:30
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so what wires have to be spliced into the relay?
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#9
by
smutts
on 18 Sep, 2009 17:35
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None, it is plug and play. Aka a doddle.
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#10
by
macka
on 19 Sep, 2009 08:40
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None, it is plug and play. Aka a doddle.
I smell a new thing for the FAQ
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#11
by
Op-Ivy
on 22 Sep, 2009 03:46
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Picked one up today. Works well! It's not supposed to rain for the next week or so though...
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#12
by
catlin_cava
on 22 Sep, 2009 06:41
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I've Always owned MK3s and didn;t know that...I still have yet to try it lol
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#13
by
Rabbit on Roids
on 24 Sep, 2009 13:09
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my audi has the same setup for wipers, i just never knew thats how they worked. i always wondered why they came on for different lengths of time every time i used them. haha. 83 had to be one of the first uses of the programmable relay tho, cause that car is ancient.
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#14
by
macka
on 22 Oct, 2009 15:38
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too easy I now have a delay wiper in my jetta