Dannyb Posted November 13, 2014 Share Posted November 13, 2014 I'm investigating why my momentary wiper switch does not work ( moving stalk in downward non-locking position)The wipers operate ok both speeds and self park ok. For a start I believe there is a spring missing from the stalk. Not sure what type or if I can get hold of one.The picture shows the switch in the home position.Both terminals seem to go the earth, So moving the stalk downwards just moved the contact to the top terminal. So how does that operate the motor. I have checked the continuity of the wires and all are good. So should I be looking at the motor end of things. Or does the missing spring serve as some sort of contact.It's all a bit electrickery Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 13, 2014 Author Share Posted November 13, 2014 PS. it has never worked in the 12 years I have owned the car. This is the last of annoying niggles I thought i'd takle Quote Link to comment Share on other sites More sharing options...
HMaze Posted November 15, 2014 Share Posted November 15, 2014 Hi Dany,yes, the moving down position for single wipe does need the spring.It is wound around the stalk axis and clamps the contact with the green wire.Picture shows a LHD one!!!Harry Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 15, 2014 Author Share Posted November 15, 2014 Harry, Thanks for that, looks like I will have to make a spring as I doubt anyone would sell them. Do you think the spring is needed to supply 12v as the green is a perm live. I just cannot see how the wiper motor would energize when moved to the single contact 1. Quote Link to comment Share on other sites More sharing options...
HMaze Posted November 15, 2014 Share Posted November 15, 2014 Hi Dany,when the wiper stalk is moved to the single wipe, the circuit R/LG to N/LG is brocken (1st speed to selfpark return).One end of the spring stays on the green contact, and the other end is connected to the 1st speed (R/LG), so the motor starts running. When you let go of the stalk the motor is again in the self park mode and runs to it's end position.The "red spring" is only to show how it is bend. You can see the form of the real spring above.Harry Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 15, 2014 Author Share Posted November 15, 2014 thanks that now makes sense, all I have to do now is try and make a spring. Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 23, 2014 Author Share Posted November 23, 2014 I have found this picture that puts the spring inside the unit and not ontop. Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 23, 2014 Author Share Posted November 23, 2014 ooops it hear Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 23, 2014 Author Share Posted November 23, 2014 Just one the above switch on ebay 99p. Bargain Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 27, 2014 Author Share Posted November 27, 2014 My 99p Mini wiperstalk arrived. It is abou 1/2" longer and the stalk is slightly bent towards the steering wheel compaired to the spity one.I have two options. either bend the stalk straight which should'nt be that hard and use the new unit or to swap the old stalk over onto the new body which is in better condition and has the important spring fitted. Either way it's not that difficult. The other bit that is different is the plug which will have to swapped over. Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 30, 2014 Author Share Posted November 30, 2014 Fitted the mini wiper stalk today. I straightened out the stalk to resemble the original and swapped over the plug. All worked a treat.So if anyone needs to renew the expensive late spit 1500/TR7 wiper stalk (£65) why not buy a new mini one 37H8285 which are about £25 new or cheaper second hand. You would be hard pressed to tell the difference between them. Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted November 30, 2014 Share Posted November 30, 2014 What is actually the difference ? :) Quote Link to comment Share on other sites More sharing options...
Dannyb Posted November 30, 2014 Author Share Posted November 30, 2014 4526 wrote:What is actually the difference ? :) It is about 1/2" longer and the stalk is slightly bent towards the steering wheel plus the plug is a female instead of male. Apart from that nothing. Quote Link to comment Share on other sites More sharing options...
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