The S connection triggers intermittent operation I believe. So with the S connection to 12 volts the relay pulses. If its not connected the relay just makes a constant path from 53m to 53s. I think the issue is that normal parking requires that the intermittent relay to just sit still and not connect 53m to 15 and start another cycle . So I reckon S is not doing its stuff. It really does not help they draw the switch contacts in one way on the circuit diagram but the physical construction is both simpler and more sophisticated than the diagram shows. To park the motor, the circuit path should connect the positive supply to the gearbox rotary switch contacts , and the motor slow connection to the output of that rotary switch. So it (53s) is powered to reach the park position then the rotary switch shorts the motor and disconnects the power. The intermittent relay is wired to break that path and connect the motor slow back to 12 volts for a moment, then once its moving it reconnects it back to the park connection . If the intermittent relay pulses, off it goes again. Only S being at 12 volts should start that off..
..thanks Mike..I think I understand it well sort of....but I think I may try it again when come back from holidays coz I really need a break from any electrics work on my bus..it caused me a lot of headaches fat last few days Wysłane z iPad za pomocą Tapatalk
My play with a 99 relay also caused brain pain. As it all works differently to expected. There were a lot of dead crimp connectors lying around after the battle.
Did you ever sort out this problem of having no park. I've just done the same thing, fitted a 6 wire switch and relay. Everything works fine except for this problem of intermittent wiper in the park position !!
Draw a pic of your wiring. I'm not convinced your 6-wire switch is connected correctly (if that's what it was intended to do). This is the one with the weird brown/brown-white wiring colours, yes? Intermittent will continue so long there's 12V on the "I" input. It will ignore anything the main switch is doing in the parked position. Parking is a function of the contacts inside the motor and the switch wiring in the dash. Does the electric screen wash position work ok?
I’m using the relay with 31,53m, 53s, S & 15 Everything works inc wash wipe with 3/4 sweeps except this intermittent motion when it should be parked. It follows the wiring diagram posted earlier with the exception of T-off to power the washer pump. Pictures to show my connections below. 1. red 53 wiper motor wire split to 53m and 53s on switch side to matching relay contacts. 2. 4-way connector for earths br/wh 31 from switch and 31 from relay included. 3. 4-way connector black/grey from fuse 10 to 15 relay, 53a switch & 53a wiper motor. 4. 3-way connector brown S1 from switch to S on relay and spare for washer pump.
..nope..just gave up..followed the og wiring diagram so sure everythings wired as per diagram..spent hours on this trying to figure out whats going on..but no succes..as in your case everything seems to work perfectly wash wipe and int wipers but no park (int wiping in park position).. Wysłane z iPad za pomocą Tapatalk
..if you look carefully on thesamba thread there are some close up pics with the mystery black/yellow or black/green cant remember sorry, thats hooked up to the relay..it is not on any wiring diagram for int wipers and I think thats the case its not working properly.. Wysłane z iPad za pomocą Tapatalk
Yeah I've seen some posts about splitting the green or black/green (53e) off to the relay instead of the black (53) but that just blew my fuse.
..yeah..I read others had the same issue with blowing fuse..I just didnt want to blow my relay as they hard to find..was wondering if that black/green or black/yellow goes direct from the wiper motor?..but that would mean completely different wiring direct from wiper motor to th3 relay and switch..but Im pretty sure that ‚per original’ wiring diagram is just wrong..look closely on the pics of the og wiring someone took you will see that mystery wire plus some extra earth wires..its just too much for my non electric brain... Wysłane z iPad za pomocą Tapatalk
Your picture and sketch of wiring are exactly how I have it wired. I'm now waiting for an older relay 111 955 531 to arrive as I've noticed an extra change over relay on some circuits with newer relays...
I would suggest not to try matching up VW wiring colours (which will drive you mad), but connect them according to their actual function. I'd be tempted to get my meter out and check continuity on the terminals, according to the switch setting, so you know what does what. It's not clear whether the relay S terminal provides intermittent (v. likely) or intermittent and wash/wipe function. Can't really tell from the wiring diagram. An easy way out would be to just spend a tenner on the Meyle relay, which has the two functions separated, so they can be wired accordingly (or not used if disconnected). It just needs a +ve supply picked up from 53a, an earth, and 53 split to give 53(S) and 53(M). I and T trigger the two other functions, if the wiper switch provides the necessary inputs (which you could determine using your meter).
Odd thoughts: - do the wipers park correctly when it's doing its (did it again @Pudelwagen ) intermittent thing? - is 12V still present on "S" when they're (supposed to be) switched off?
I wonder, looking at the schematic if there are actually three distinct states of connection S - at 12 volts, open and grounded. Its hard to tell from the wiper schematic, but in position J it is open. In positions 0,1,2 and T its connected to a switch which is normally connected to ground except when that switch is activated then S is connected directly to 12 volts . I expect leaving S hanging around/ floating causes the intermittent operation. Connecting to S to 12 volts starts wash/wipe complete cycles. Connecting S to ground turns it off . (or maybe the floating and 12 volt functions are the other way around ) The "99" relay I used has a separate connection for I and T, separating those functions into two wires.
I thought the same, but unless you give it a workout on the bench, won't really know what S does. Tri-state inputs a bit advanced for automotive relays! I've done a couple of pigtail looms for folk supporting the Meyle version of the 99 (I and T separate), and they've fired up first time. Saves a lot of pain for a tenner. Ditto with the switch. Unless you get your meter and buzz the various contacts through, can't really be sure what it's doing.
Yes, I too spent a fair bit of time with the 99 relay to work out its logic. Which includes the fact that it has to see voltages changing on one of the relay switched outputs to detect the completion of a cycle of operation, before it turns "off" in wash/wipe cycling mode. I think what is needed is for somebody to measure the voltage on the S pin when its not connected. Biasing a pin to 6 volts and detecting that instead of 12 volts is actually pretty simple even using just transistors. For people with the wiring to suit the relay with an S connection instead of doing it from scratch, getting the correct relay is a good idea. For anybody else, buying one of the VW "99" or "199" relays off eBay seems to be fairly successful as a way of getting programmable intermittent wipe, and a wash/wipe cycle that works with an aftermarket electric washer switch.
Now, I am beginning to wonder if trying to connect an aftermarket pump to S is causing the issue - its grounding the wire through the pump motor. Did the original install have the water valve and an compressed air driven wash ? As the schematic doesnt show a motor for the pump. So a switch contact changes the state of S but doesnt drive the motor. If that is the case you may need an extra relay - theres this thread on the Samba -- https://www.thesamba.com/vw/forum/viewtopic.php?t=186468&postdays=0&postorder=asc&start=0 Then VW changes to the '99' style relay with a flake, with a separate I and T connection for an washer pump motor.
^All of the above (apart from NASkeet's endless bloody waffle on the Samba). Just spend a tenner on a I/T relay. Could have it working by now.
