JohnD Posted July 3, 2016 Report Share Posted July 3, 2016 All, My Vitesse was originally fitted with single speed wipers. Like many Triumph items at the time it had a live feed, and the switch was on the earth wire. But in the past it was fitted with a two speed wiper motor, I suppose from a GT6 Mk2, and wired with a switched live feed and a fixed earth. Originally, the loom had a five way connector that plugged into a socket on the motor. But I've had to use spade connectors plugged onto two of the five connectors in the socket on the motor. This provides a single speed of the wipers, I don't know if it is slow or fast! And it won't self park. I'd like two speeds. Has anyone done this? I've sketched the part of the GT6 circuit diagram to show the connections of the two speed switch and the wiper motor. How does it work? Is it a matter of supplying 12V to one or the other of the terminals (2 or 3) of the socket, or something else? I presume that the direct 12V supply to the motor is to keep it going until it parks. JOhn Link to comment Share on other sites More sharing options...
JohnD Posted July 3, 2016 Author Report Share Posted July 3, 2016 Google is my friend! See, from the excellent vitessesteve: http://vitessesteve.co.uk/LucasStuff/Triumph-2-speed-wiper-wiring ! I'm off to try it out. John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 3, 2016 Report Share Posted July 3, 2016 Yes, the direct feed is for the self park, The socket is an integral part of the self parking mechanism and does expire, I've replaced two on mine. Link to comment Share on other sites More sharing options...
JohnD Posted July 3, 2016 Author Report Share Posted July 3, 2016 vitessesteve's method is to use a relay to back up, or replace the internal; park switch. Comments? John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 4, 2016 Report Share Posted July 4, 2016 Easy and cheap enough to replace the socket/switch. Difficult to explain how it works but dismantling makes all clear. Link to comment Share on other sites More sharing options...
JohnD Posted July 4, 2016 Author Report Share Posted July 4, 2016 Dismantling? Dismantling what? There are five wires to the connector, and three wires out of it that go into the motor, but I'm not inclined to take that apart Old plastic tends to fracture! vitessesteve's site is a good explanation of the way the wiper parks, but it seems that to add the two-speed to a car that wasn't wired for it, you need an extra relay. See his site. John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 4, 2016 Report Share Posted July 4, 2016 That's exactly what I'm suggesting you take apart, although, as you say, old plastic tends to fracture. 5 wires in, 3 wires out, what are the other 2 doing? I think they feed a crude relay in the back of the connector which maintains the circuit until the wipers park. Link to comment Share on other sites More sharing options...
JohnD Posted July 4, 2016 Author Report Share Posted July 4, 2016 According to vitessesteve's account (which you should read) and other online descriptions of self-parking wipers. It's not a relay but a position switch inside the motor. One of the extra leads feeds 12V to b ring the wipers back to position when the dash switch is turned off, and then the internal switch turns it off. Steve's (and others') reason for using a relay is obscure (to me, anyway) but he pronises success! John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 4, 2016 Report Share Posted July 4, 2016 John, I HAVE read vitessesteve's account where he says he dosn't really know how the motor is wired up! Here is another much clearer explanation which shows the park switch located in the switch housing connector, http://triumph.daveola.com/NOTES/Windshield%20Wiper%20Motors.pdf Link to comment Share on other sites More sharing options...
Mike R Posted July 4, 2016 Report Share Posted July 4, 2016 Hello John, hope the attached sketch might help. I put together a wiring diagram for my GT6 with a bit more detail that helps explain how various bits work. I've just shown the wipers bit here. No. 32 is the wiper switch and is shown in the off position. No. 33 is the wiper motor with the self park switch next to it, shown in the parked position. If the switch is off, but not parked power comes in on the top green wire into the park switch, back to the wiper switch and then to the motor on the red/light green low speed feed. When parked, that power is cut via the park switch, but more than that, both sides of the motor become earthed. That way any slight run on of the motor generates a shorted current causing the motor to self brake - regerative braking and stop very quickly. Without it the run on of the motor can cause the park switch to miss the park position and keep going, at least it did on mine some years back. Not sure how that compares to the Vitesse setup .... Anyway hope that helps, Mike Link to comment Share on other sites More sharing options...
JohnD Posted July 4, 2016 Author Report Share Posted July 4, 2016 Thanks, Doug and mrantell, That paper from Dan Masters refers to a wiper motor with only four connections, which would confuse the hell out of me. And your suggested GT6 wiring has a similar effect, MR! Above is the suggested wiring from Steve. I'm happier t give that a go, but now I have several fall backs! THnaks John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 5, 2016 Report Share Posted July 5, 2016 John, I strongly suspect you are doing this as a wind up! If so . Where are these "only four wires" that you refer to? The Dan Masters diagram clearly shows the 5 pin connector with 5 connections to it. They are marked U/LG, R/LG, N/LG, G and B. The LGs come from the dashboard switch, G is +12volts and B is earth. Inside the 5 pin connector is the park switch activated by the cam on the drive gear. Coming out of the 5 pin connector are the 3 wires to the motor marked Y, R and B. Link to comment Share on other sites More sharing options...
JohnD Posted July 5, 2016 Author Report Share Posted July 5, 2016 Sorry, Doug, Looking more closely the four post connection is the "Dashboard switch" Shows how easily I am outfaced by electrics! John 1 Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 6, 2016 Report Share Posted July 6, 2016 John, you are not alone! I couldn't figure it out until I took the 5 pin connector apart, and then of course it wouldn't go back together. Still a new one was under £10. Another fine piece of Triumph engineering! 1 Link to comment Share on other sites More sharing options...
JohnD Posted July 19, 2016 Author Report Share Posted July 19, 2016 Outfaced or not, after a whole day of making up leads and connecting up a five post relay, a three-position switch and the two speed wiper according to the instructions, I got ... a wiper that didn't work at all. I recognise that I have no understanding of why the relay should make it work, but I checked that I had reproduced the circuit as published, and it doesn't work. Oh, well. I wired back to the way it was before. And it works, one-speed and no self-parking; better than nothing Where did you get a new connector, Doug? John Link to comment Share on other sites More sharing options...
dougbgt6 Posted July 20, 2016 Report Share Posted July 20, 2016 John, I think this is it. I have seen them slightly cheaper on ANG direct site and Paddocks but £10 aint to bad. http://www.ebay.co.uk/itm/TRIUMPH-SPITFIRE-IV-1500-GT6-TR6-DOLOMITE-2-5-WIPER-MOTOR-PARKING-SWITCH-520160A/351215548903?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D35925%26meid%3D7925ed9fa109474ca32fcfc24c1e3e17%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D231985919627 Link to comment Share on other sites More sharing options...
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