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| macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 996   
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I was referring to the OP:
The internal wiring of both switch types is different. You probably wont damage anything but it wont work either. It's not just that one latches and the other doesn't.  Click image to enlarge Click image to enlarge |
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26th Jan 2024 7:03pm |
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| 22900013A Member Since: 23 Dec 2010 Location: Oxfordshire Posts: 3140  
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Well this gets more and more daft. Frosty this morning so popped the s reen on (worth a shot I thought), no light, oh well got out and scraped a bit of frost off so I could see out. Set off and after a few minutes flicked the wipers and the frost came off. That's odd I thought. The heated screen was on! I then noticed the telltale was now lit. I've tried it a few times today and it all appears to be working as it should, hot screen and light lit. Very confusing. A total failure is of course easier to sort than a transient fault. 2011 110 USW
1973 Series III 1-Ton 1972 Series III 1-Ton Cherrypicker 1969 IIA 1-Ton 1966 IIA 88" |
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27th Jan 2024 6:56pm |
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| 22900013A Member Since: 23 Dec 2010 Location: Oxfordshire Posts: 3140
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You really couldn't make it up...
Click image to enlarge 2011 110 USW 1973 Series III 1-Ton 1972 Series III 1-Ton Cherrypicker 1969 IIA 1-Ton 1966 IIA 88" |
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28th Jan 2024 1:53am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6489 
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You’ve got a loose connection somewhere. The telltale is connected to the feed to the screen, no telltale = no power to screen.
The logic goes like this: The switch sends a pulse to the timer unit. When it receives this, the timer unit sends an output to the relay coil if the engine is running. Relay outputs to screen and telltale. The timer unit sends that coil output for the timer duration (10 mins?) or until the engine stops or it receives another pulse from the switch. 1988 90 Td5 NAS soft top
2015 D90 XS SW |
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28th Jan 2024 5:04pm |
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| 22900013A Member Since: 23 Dec 2010 Location: Oxfordshire Posts: 3140
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Yes I get that. I only touched the dash end of everything so presumably it was the dash switch connection? As its currently working I suppose all I can do is keep an eye on it! 2011 110 USW
1973 Series III 1-Ton 1972 Series III 1-Ton Cherrypicker 1969 IIA 1-Ton 1966 IIA 88" |
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28th Jan 2024 6:44pm |
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