I am trying to figure out what I have here. I noticed that there are two different wiper switches available. 70-72 and 73-76.
This is the one that is in the best condition.
Notice that it only has four pins on the left side.
I have already attached a switch that I got from davep, which will trigger my electric washer pump that I plan to install.
This is the second one that I have. Being in worse condition out of the two.
It has five pins on the left side. The extra one being a brown, which is ground correct?
The switch is also different in that the plunger that would activate the washer fluid has an electrical contact
I am running a wiring harness from a 72 car. Which switch do I need to use? Am i missing pieces from the first switch maybe?
Im stumped here...
Pete
See: http://www.914world.com/bbs2/index.php?showtopic=72503&hl=wiper*++wire*
This has some helpful info and diagrams.
I've done a lot of research on this topic. Here is what I know:
Switches:
1. The 4 wire switch does only support low and high speed. The water is activated through a valve. Wipers will not work when the water valve is activated. The connector has 5 terminals but one is not populated.
2. The 5 wire switch adds the timed delay relay option and wipers on when water valve is open. Note that you can't run an electric water pump with this switch. It just triggers the delay relay to operate the wipers when the valve opens.
3. There is a 6 wire switch used in Super Beetle that has an additional wire for the electric pump. This wire doesn't go to the connector and has it's own spade connector that should be routed to the pump (see picture - note that this switch has both the valve and the pump wire so you can use electric or pneumatic washer system)
4. There is an old 924 switch that has the same functionality as (3) but has a larger connector with 7 terminals. It's an extension of the 914 connector with 2 additional terminals, one of them empty. The pump wire is in the extension. (see diagram below)
5. The signal switch has a tab that prevents the wiper switch to go into the intermittent position. That tab must be removed when an extended switch is used.
Harness:
The 914 harness had the option for intermittent wipers. In some models, everything is in place and an intermittent wiper is installed in the front trunk. If that relay is not there, the wire from the switch (5th terminal) is probably still in place but it's wrapped in the harness to prevent a short.
You can add the relay but you'll have to cut the return power from the wiper motor and plug the relay there, together with the said wire and power and ground.
My opinion, and this is what I've done to my car as well, is that with all the trouble you go through to add the wiper relay, it's better to add a programmable relay that will permit you to control the wiper interval. I use a VW relay that allows that just by switching the wipers on-off-on once to program the interval. The relay wiring is a bit different but you need to add that relay anyway.
Great!
Thank you Valy for all that info. I now have some solid info to go forward with!
A switch from a '77 924, Rabbit, or Scirocco works. It's NLA, though.
The Cap'n
Here is the best solution in my opinion, using the new VW programmable relay.
If you add a delay relay to your wipers, this is the same amount of work and you get all the benefits of modern electronics with variable delay without changing the appearance.
Update.
Many Thanks to Valy for the countless e-mails and assistance.
I have my front trunk completely wired now.
IMPORTANT: I used the 924 7-pin but, it does not fit in a 914 steering column. The 914 column is only wide enough to support the 6-pin. I was able to use the plastic plug pieces from my 914 switch and make it work. Now I have the intermittent wiper relay and a lead off the switch to activate the pump.
Just a heads up to anyone thinking of using the 924 switch.
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There are reproductions available. Not great but good enough.
http://www2.cip1.com/ProductDetails.asp?ProductCode=VWC-111-953-519-G
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Dang! I bought part # 111-953-519 H based on someones post here a long time ago. Every time I turn it on a fuse burns out. Good thing I really don't drive in the rain. Any ideas as to the difference between the G and the H models? Is there a way to tweak mine? The steering/lock assembly on my car is a 74 model. Car is a 75.
[quote name='Krieger' date='Feb 28 2012, 08:37 PM' post='1636033']
[/quote]
There are reproductions available. Not great but good enough.
http://www2.cip1.com/ProductDetails.asp?ProductCode=VWC-111-953-519-G
[/quote]
Dang! I bought part # 111-953-519 H based on someones post here a long time ago. Every time I turn it on a fuse burns out. Good thing I really don't drive in the rain. Any ideas as to the difference between the G and the H models? Is there a way to tweak mine? The steering/lock assembly on my car is a 74 model. Car is a 75.
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I have exactly that switch in my 74 and it works fine.
I can try to help but you need to provide more details.
Which fuse Burns?
What exactly you turn on?
What's connected to the switch?
Have you done any modification? Pictures help very much.
I did a little research on this as well. If you want intermittent wipers and use the signal to trigger a relay for the washer pump, you will have a problem. The load on from the washer pump relay will not allow the intermittent wiper to operate properly. My solution was to add a high impedance relay driver circuit. It is very simple and easy to make. Intermittent wipers and washer pump without an extra switch.
http://www.914world.com/bbs2/index.php?showtopic=111175&hl=wipers
Interesting Mark. So if I pull my stalk and activate the pump, it should run the wipers what; 4 times? But you're saying the load from the pump will affect this?
Whew...
IIRC the brown white wire to the intermittent relay uses 3 signal levels. At ground, the intermittent wiper function is off. Pulse to 12 volts (as in a wiper stalk pull) and the intermittent relay will cause the wipers to give a few wipes. Open, and the intermittent function works. Changing the resistance to some extent (not enough to be useable) will change the delay time. If you put a relay with one grounded to this connection Washer pump coil or relay coil), the signal to the intermittent relay will appear to be grounded and no intermittent function.
DELETED
Which fuse Burns? -5th one from right, it has the wiper/cig lighter on cover.
What exactly you turn on? When I turn on the wipers the motor starts to move then the fuse cooks
What's connected to the switch? All stock...except hot wire for cig lighter powers vdo fuel gauge, which functions correctly.
Have you done any modification? Pictures help very much. The harness is all stock otherwise. I do not have anything fancy added for the wipers.
Car is 75.
I replaced the 75 plastic steering column housing, with an earlier 73/4 metal unit. This is the assembly that holds the key/lock, wiper washer, turn signal
????
Try this:
ignition off. Put the which in high speed position and turn on the switch.
If the wipers work then your short is in the return line from the motor to switch.
I put a 16 amp in and put the wiper switch all the way up, key on, zap! it immediately fried.
Wipers didn't move. I am going to pull out the steering wheel now.
So I am measuring between the ground terminal on the plug (body harness) that goes into the back of the wiper switch and the other wires on that same plug?
here is what you should get:
green/white 0 ohm or very low---dont have a green/white, i have a black/green white
Red/white infinite.---red/gey?...
black purple will read the motor resistance---dont have
Black blue should read higher resistance than previous one.--dont have
My wires don't really match your descriptions...
That's the signal switch connector. Look at the other one, smaller.
And use the car body for ground please.
Doh! I figured that out and this is what I'm getting
green/white infinity!!!!?
black/ blue 0
black/ purple 0
red/black infinity
OK.
Green/white shows that your wipers are probably not completely parked. Don't worry about that for now.
The other two black ones show that your wiper motor is probably history or you have a short in the harness.
Can you switch the meter to the lowest ohm scale and repeat the measurement. You should get different readings, black/blue should be higher.
If bothe are still 0 it may be the harness.
black/purple 10.7
black/blue 10.2
Just got an old wiper switch of unknown origin. Plugged it in turn on ignition flick switch, wiper works no problems....
Andy... It's your switch.
Happy to help!
Eric, I knew you're going to master it!
For those who own a '70-71 (I think that is the years) that have a factory dash mounted wiper switch, I have a replacement that is intermittant and has a hot lead for a 12 volt pump. It is designed for use with Bosch systems and had one on my '74. For those with the steering column switch, this one can be used but it has to be dash mounted. pm me with any questions....
I'l get back into this tonight when I get home.
Hey, I'm at it again.
Here are some observations:
The old unknown switch works wipers and does not pop fuse when installed in steering assembly as well.
The "new" switch works the wipers and does not pop the fuse when it is out of the assembly....
I 'm gonna study these switches and see if I can find out why.
Your backdate column is grounded. Check from something protruding from the switch that touches the column when installed.
Also check that the small detachable copper tab is installed correctly.
Again, a picture would help a lot.
Take a look at this:
There was a small "protrusion" I filed it a little put some electrical tape over the corner and it works when installed! All back together and ready to go! Thanks for the help!
The protrusion was similar to the top right of your picture. It was not that hard to find the scrape it made inside the metal housing.
Happy to help
Positive (99% sure but I can't check right now).
Yes, it's 12v.
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