 | Home > Puma (Tdci) > Interior/courtesy lights? |
 
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443   
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More than likely a poor earth in the roof, something like a corroded terminal that has eventually given up the ghost.
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19th Jan 2015 1:06pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971  
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If the manual "on" switch makes no difference I'd almost be inclined to suspect a dodgy positive supply.
Please excuse me if I'm telling you something you already know, but there is a permanent live to the light and in order to make it come on the other side of it is earthed. In the "on" position that's a "manual" earth (I have a feeling it might just be straight to the roof actually) and when it's in "auto" it's earthed through the 10AS (and can do the fancy dimming stuff). If the fault happens both in "on" and "auto" then that suggests that the problem is common to both of them, which puts it down to positive supply, bulb holder, bulb and switch. I hope this is big enough to read, but it's all in dgardel's manual.  Click image to enlarge |
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19th Jan 2015 6:10pm |
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| Natlas Member Since: 20 Mar 2013 Location: West Sussex Posts: 460 
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I think they earth through the screws that hold the door switches in place, might be worth checking they are doing their job? 2.2 90 XS
88" Series One Old Norton 
Minerva |
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19th Jan 2015 9:44pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971
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you're right, but only when the switch is in the "on" position, not when it's in the 10AS controlled door open position.
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20th Jan 2015 12:47pm |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5804  
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Crikey, can anyone really understand that diagram? A lot of work for a light. Head torch or Maglite taped to Rear-view mirror should suffice. Unless you need good lighting for Dogging? Monsieur Le Grenadier I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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20th Jan 2015 12:50pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17372 
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Yes, it's quite simple really! You should see some of the other ones for the vehicle. |
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20th Jan 2015 1:00pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971
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It's not that hard really. I'm not 100% sure what "Junction box-Battery" is, but basically you've got a +ve feed from the battery going to the 10AS, and then another +ve feed going to the interior light through Fuse 30 in the main under dash fuse box. From there, a purple cable is split 1, 2 or 3 ways for HT/90SW/110SW, through the lamp and to the switch. There's then a -ve feed either straight from the battery (black, but it's actually straight to the roof) or from the 10AS (purple and white) depending on which was the switch goes. In order to light up, something needs both a +ve and -ve supply to it, the +ve is always on assuming the fuse hasn't blown and connecting the -ve is what controls the light. |
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20th Jan 2015 1:07pm |
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