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Location:
Canberra
Registered:
February 2004
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Three speed wipers on RA28
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Sun, 04 September 2005 13:16
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Hi guys,
I'm in the middle of converting the window wipers on a ra28 to three speed. I reckon that a ra40 wiper board will drop straight into a 28 stalk cluster. The 40 has a eight wire setup and the 28 has a four wire set up at the board end. Has anybody had any sucess with this conversion before? Thanks guys.
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Location:
Terrigal
Registered:
May 2002
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Re: Three speed wipers on RA28
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Sun, 04 September 2005 23:39
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Very interested in how this goes.. Sorry cannot help though.
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Location:
Adelaide
Registered:
June 2003
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Re: Three speed wipers on RA28
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Mon, 05 September 2005 06:37
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Check out a YH61 hiace too, the have really good wiper speeds.
Slow is still pretty quick, but intermittent.
Medium is same speed as slow but not interittent.
Fast is pretty damn fast.
I reckon the only thing that might be an issue is the hazzard light switch, but I'm not sure if that's attached or not. I'm sure that something else could be figured out for that anyway.
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I Supported Toymods
Location:
Glenmore Park, NSW
Registered:
March 2004
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Re: Three speed wipers on RA28
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Mon, 05 September 2005 06:55
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tried swapping hazards from a ra40 onto a ra28.
lemme just say i should a just bought the working ra28 stalk.
very tricky ... but good luck
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Location:
Newcastle
Registered:
May 2002
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Re: Three speed wipers on RA28
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Mon, 05 September 2005 09:26
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hi,
yeah i have an ra40 wiper stalk on my 28 for that reason.
i believe there was a relay or something else missing, cant remember what at the moment (i havnt thought bout it for well over a year- since i last had my car)..... but you definately need more than just the stalk.
Cheers
Stew
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Location:
Tamworth
Registered:
August 2004
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Re: Three speed wipers on RA28
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Mon, 05 September 2005 10:20
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Sorry cant help, but i am also very interested in this. Can donate an ra28 stalk if needed.
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Location:
Canberra
Registered:
February 2004
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Re: Three speed wipers on RA28
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Mon, 05 September 2005 11:26
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I've got a ra28 stalk and a 40 stalk from one I wrecked as well. I havent looked at the diagrams yet but you can easily drop the ra40 stalk and board for the wipers into the 28 assembly. The wiring is different though, you also need a three speed motor. They differ because they have five pins at the motor end as opposed to four pins on the two speed motor. So hopefully, i'll be able to drop the 40 board and stalk in there and run some extra wires to the cressida motor which i'll re-pin and add a couple of extra loom wires to. Easily said, lets just see how I get on because the eight wire 40 config is confusing.
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Location:
Newcastle
Registered:
May 2002
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Re: Three speed wipers on RA28
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Tue, 06 September 2005 08:08
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hey there,
i didnt drop the stalk and wiper into the 28 assembly. i put the whole 40 assembly on my 28. it plugged straight into the loom on the underside of the steering wheel, and every thing still works fine.
the only difference i could find was the ra40 loom has one extra wire, which i assumed was for the intermittant signal. this may be an easier way than dropping the board in, only one wire to connect. unfortunaely this is where i ran out of interest, or maybe where my car went into the panel shop, never to be seen again, but for some reason i didnt get it runnin, yet.
Cheers
Stew
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Location:
Brisbane
Registered:
October 2004
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Re: Three speed wipers on RA28
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Sun, 11 September 2005 10:04
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hey guys... i'm a little puzzled... when you say 3 speed i presume you mean intermittent, slow and fast...
mine has this already... but intremittent is speed variable... the stalk has 2 speeds, but there's a little knob on the dash, to the left of the steering column, which turns on the intermittent and adjusts the speed... but atm it's not working... other problem i found was that it was quite noise... clicked everytime the wipers wiped..
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Location:
SYDNEY
Registered:
August 2003
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Re: Three speed wipers on RA28
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Sun, 11 September 2005 10:29
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You can get from jcar I think an intermittent unit. You just connect 3 wires and place it on the dash. It adjust the speed from inter... to fast, cheap as chips and easy to install.
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Location:
Perth
Registered:
May 2003
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Re: Three speed wipers on RA28
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Sun, 11 September 2005 11:46
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I transplanted the later RA40 unit with intermittent wipers into an early RA40 without intermittent wipers.
I found it very interesting that Toyota used a special little box to generate the intermittent signal, from tht outside it looks just like a relay. Inside there is a motor geared down to a little cam and a set of contacts. Basically the cam opens and closes the contacts as the motor rotates but it is slow enough to only give a pulse every 'x' seconds. Hence providing the intermittent wiper signal. There is no change to the original wiper motor and this box just plugged into the fuse box area - already a slot there for it. It should be pretty easy to adapt to the RA28.
At a guess the Jaycar kit would probably use a 555 timer circuit to generate a pulse to trigger the wiper motor where the frequency of the pulses is variable by a pot (potentiometer) so that rate of the intermittent wipers is variable. This system could be used with any factory wiper installation. Well except vacuum operated wipers 
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Location:
Canberra
Registered:
February 2004
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Re: Three speed wipers on RA28
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Sun, 11 September 2005 16:19
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I havent seen that kit in the jaycar catalogue mayby its not around any more? Sounds a whole lot easier then repinning a heap of wires and and new looms for a 28. I'll try dick smith.
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I Supported Toymods
Location:
Glenmore Park, NSW
Registered:
March 2004
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Re: Three speed wipers on RA28
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Sun, 11 September 2005 23:50
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here here
jaycar kit sounds better
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Location:
Brisbane
Registered:
February 2003
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Re: Three speed wipers on RA28
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Mon, 12 September 2005 04:53
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many moons ago, i got a kit from dick smith to do variable wiper speed in my RA23 - was a german/euro cheap kit.
however, a quick look on their web site was fruitless. Best thing might be to head to an actual store.
cheers, Charles
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Location:
Canberra
Registered:
October 2002
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Re: Three speed wipers on RA28
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Mon, 12 September 2005 05:34
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Be careful there. I find that Dick Smith employees have no idea about what they're doing.
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Location:
Brisbane
Registered:
February 2003
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Re: Three speed wipers on RA28
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Mon, 12 September 2005 05:39
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yup - that's why i'm suggesting you go and have an actual look in the store.
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Location:
Canberra
Registered:
February 2004
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Re: Three speed wipers on RA28
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Tue, 13 September 2005 18:30
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You can always rely on the Chuckster. I was in dick smith and didnt find that kit, the 20 year old girl with behind the counter seems to get confused by the word diode, so I didnt bother asking, i'll have another look at teh 40 conversion when I get time. Thanks mate.
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