Mo Murphy Posted September 25, 2020 Share Posted September 25, 2020 Afternoon all, I'm trying to get the rear wiper working intermittently using a front wiper relay. Td5 push button switch and a rear wiper of unknown vintage. I can't get it to work. Attached is a picture (old skool 😉) of what I've worked out. Could someone with some electrical nous tell me how it SHOULD be wired up ? I can then compare that to what I've been trying and see where I've been going wrong 😬 Many thanks Mo Quote Link to comment Share on other sites More sharing options...
western Posted September 25, 2020 Share Posted September 25, 2020 I think simonb is the man to talk to, I see you asked about using a Td5 switch in Jan 2011 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 25, 2020 Author Share Posted September 25, 2020 Indeed Ralph, that was in another life 😉 And indeed I do still need an electrical grown up. Mo Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 25, 2020 Author Share Posted September 25, 2020 Thought occurs that 2002 on TD5 dash switch switches the earth. So I may need a 4 pin relay to change that to switching live. Or put an ignition live to the switching terminal on the relay and switch the relay earth terminal. Progress, I think ... If these musings fail to make sense please say so ! Mo Quote Link to comment Share on other sites More sharing options...
simonb Posted September 26, 2020 Share Posted September 26, 2020 If its a TD5 dash with the later push switch, you need to change the existing relay on the rear door and swap it out for the intermittent one. Years ago I used to do a conversion kit available via a well known auction site. As such I don't have the actual circuit diagram. PM me and when I'm back home after the wknd I'll see if I have still have any left. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 26, 2020 Author Share Posted September 26, 2020 Thanks Simon, It seems to be quite straight forward, having researched it. I fear the relay I'm trying is duff, so tomorrow, weather permitting I'll take the known good one out of the front and try it on the back. In the meantime I've ordered a replacement which I hope will arrive soon. Mo Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 27, 2020 Author Share Posted September 27, 2020 Right, duff relay replaced and success ! Rear wiper now on a 5 second intermittent wipe. Rear washer activates 5 wipes of the rear screen but only does so if the rear wiper is turned on. I suspect this is because I'm switching the relay with the earth so the relay only operates if the earth is connected. I'll wire up a relay to switch the live on the j pin and then have a permanent earth which I hope will resolve that one. Hope this helps someone. Old skool, back of a bit of scrap paper wiring diagram included. Mo Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 27, 2020 Author Share Posted September 27, 2020 Just to finish up, earth switching the intermittent relay changed to live switching with an additional 4 pin relay. Now have intermittent wipe when the button is pressed and wash / wipe works all the time regardless of rear wiper button. 👍 Mo 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.