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Can anyone help please.Does anyone know where the bubs are that light up the fog light and rear screen push and pull switches on the SC please.
Ray
 
Hi Ray, I haven't completely dissasembled these switches but according to the manual and commonsense the bulbs are directly behind each switch under the dash. If you have a radio or CD fitted you will probably have to remove it and it's fitting tray to gain any useful access to them. The light in the switches is transfered from the bulb to the cockpit via perspex 'light stalks' about 1 1/2 " long . Check if these are in there, they maybe missing or broken (easily fixed with super glue). If you still have no joy then the circuit is dead. Check bulbs, fuses and relays as both circuits have all three.
 
Cheers Bones,I have removed the radio and its casing but no joy.the bulkhead continues right up under the dash and the switches and presumably the bubs are behind it

Thanks for your help Ray
 
Ray you are aware that the switches undo and can be pushed backwards out of the dash - unscrew the rubber heads of counter clockwise and then get a circlip tool or similar to rotate the indented fixing washer - I don't know how this would help as it's dependent on the amount of wire they have left free for maintenance.
 
You can get at the bulbs by gently prising the coloured lens out of the rubber knob which itself just unscrews from the switch.I think the switches are just a posher version of VW Beetle switches!
 
Have you replaced these bulbs Steve or are you surmising that that's where the bulbs are. On SCs I've seen there is a light 'stalk' behind the lens not a bulb.
 
I have never replaced the bulbs but ever the optimist I thought it best to try the most logical possibility before dismantling the dashboard! The nearest I have got is carefully rotating the fog light symbol so that it is vertical in the switch!!
 
They are a pain; my cigareete lighter is currently non functional - caused by the female socket, figures - I'd like to investigate but is it worth the grief as I only occasionally have allowed women smokers to puff away in there.
 
Hi Bones
I have allready removed the threaded retaining rings but I am frightened
to push through in case I never see them again.

Ray
 
I have a similar problem with the rear foglight switch on my 1983 SC. My MOT is due and the tester moaned last year about the lack of a warning light. I have taken off the knob and cannot see any sign of a perpsex rod. Is it visible, or wholly within the shaft of the knob? Also, is the bulb inside the switch mechanism? If so, can one dismantle the switch and replace the bulb? My 911 workshop manuals (from Bentley of US and also Haynes) do not give any useful info but do say that I can only remove the switch if I first dismantle the air blower in the boot. Anyone know of any shortcuts?
 
I'd find another testing station if I were you John he sounds like a tosser. Do a search on 'MOT' on google and you will find a link to a MOT site where you can download the reg's, I don't think interior fog warning lights are on the list of things to be tested. The bulb is situated behind a 'light stalk' which is a perspex 1 1/2" long, 1/8" thick, round transparent device running up inside the switch from the bulb to the fog light logo. Replacing the bulb will be tricky. The problem is as you know the switch sits over the CD/Radio slot so you will first have to remove that and it's tray. Have you tested if the fog light working ok, if not maybe the whole circuit is down.
 
According to the MOT test requirements that I can find on the internet, a working telltale is required. I have therefore spent a jolly few hours stripping out the fresh air blower to get at the back of the switch. Having got the switch out and checked the wiring, I find that the bulb is actually in the knob and all that you need to do to get at the bulb is prise out the centre disk of the knob. Having replaced the bulb, everthing now works. I am surprised that the owners handbook does not mention this.
 
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